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OPA2354AIDGKRG4

OPA2354AIDGKRG4

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

    VSSOP8

  • 描述:

    IC OPAMP VFB 100MHZ RRO 8VSSOP

  • 数据手册
  • 价格&库存
OPA2354AIDGKRG4 数据手册
Product Folder Order Now Support & Community Tools & Software Technical Documents Reference Design OPA354, OPA2354, OPA4354 SBOS233G – MARCH 2002 – REVISED APRIL 2018 OPAx354 250-MHz, Rail-to-Rail I/O, CMOS Operational Amplifiers 1 Features 3 Description • • • • • • • The OPAx354 series of high-speed, voltage-feedback CMOS operational amplifiers are designed for video and other applications requiring wide bandwidth. They are unity-gain stable and can drive large output currents. Differential gain is 0.02% and differential phase is 0.09°. Quiescent current is only 4.9 mA per channel. 1 • • • • • Unity-Gain Bandwidth: 250 MHz Wide Bandwidth: 100-MHz GBW High Slew Rate: 150 V/µs Low Noise: 6.5 nV√Hz Rail-to-Rail I/O High Output Current: > 100 mA Excellent Video Performance: – Differential Gain: 0.02%, Differential Phase: 0.09° – 0.1-dB Gain Flatness: 40 MHz Low Input Bias Current: 3 pA Quiescent Current: 4.9 mA Thermal Shutdown Supply Range: 2.5 V to 5.5 V MicroSIZE and PowerPAD™ Packages The OPAx354 series of op amps are optimized for operation on single or dual supplies as low as 2.5 V (±1.25 V) and up to 5.5 V (±2.75 V). Common-mode input range extends beyond the supplies. The output swing is within 100 mV of the rails, supporting wide dynamic range. For applications requiring the full 100-mA continuous output current, single and dual 8-pin HSOP PowerPAD versions are available. The single version (OPA354) is available in the tiny 5pin SOT-23 and 8-pin HSOP PowerPAD packages. The dual version (OPA2354) comes in the miniature 8-pin VSSOP and 8-pin HSOP PowerPAD packages. The quad version (OPA4354) is offered in 14-pin TSSOP and 14-pin SOIC packages. 2 Applications • • • • • • • • • • Video Processing Ultrasound Optical Networking, Tunable Lasers Photodiode Transimpedance Amps Active Filters High-Speed Integrators Analog-to-Digital (A/D) Converter Input Buffers Digital-to-Analog (D/A) Converter Output Amplifiers Barcode Scanners Communications Multichannel version features completely independent circuitry for lowest crosstalk and freedom from interaction. All features are specified over the extended –40°C to +125°C temperature range. Device Information(1) PART NUMBER OPA354 OPA2354 OPA4354 PACKAGE BODY SIZE (NOM) HSOP (8) 4.89 mm × 3.90 mm SOT-23 (5) 2.90 mm × 1.60 mm VSSOP (8) 3.00 mm × 3.00 mm HSOP (8) 4.89 mm × 3.90 mm SOIC (14) 8.65 mm × 3.91 mm TSSOP (14) 5.00 mm × 4.40 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Simplified Schematic V+ IN OPA354 V OUT +IN V 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. OPA354, OPA2354, OPA4354 SBOS233G – MARCH 2002 – REVISED APRIL 2018 www.ti.com Table of Contents 1 2 3 4 5 6 7 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Device Comparison Table..................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 2 3 3 6 7.1 7.2 7.3 7.4 7.5 7.6 7.7 Absolute Maximum Ratings ...................................... 6 ESD Ratings.............................................................. 6 Recommended Operating Conditions....................... 6 Thermal Information: OPA354 .................................. 7 Thermal Information: OPA2354 ................................ 7 Thermal Information: OPA4354 ................................ 7 Electrical Characteristics: VS = 2.7 V to 5.5 V (SingleSupply) ....................................................................... 8 7.8 Typical Characteristics ............................................ 11 8 Detailed Description ............................................ 16 8.1 Overview ................................................................. 16 8.2 Functional Block Diagram ....................................... 16 8.3 Feature Description................................................. 17 8.4 Device Functional Modes........................................ 21 9 Application and Implementation ........................ 22 9.1 Application Information............................................ 22 9.2 Typical Application ................................................. 22 10 Power Supply Recommendations ..................... 24 11 Layout................................................................... 24 11.1 11.2 11.3 11.4 11.5 Layout Guidelines ................................................. Layout Example .................................................... Power Dissipation ................................................. PowerPAD Thermally-Enhanced Package ........... PowerPAD Assembly Process .............................. 24 24 24 25 25 12 Device and Documentation Support ................. 27 12.1 12.2 12.3 12.4 12.5 12.6 12.7 Documentation Support ....................................... Related Links ........................................................ Receiving Notification of Documentation Updates Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 27 27 27 27 27 27 28 13 Mechanical, Packaging, and Orderable Information ........................................................... 28 4 Revision History Changes from Revision F (June 2016) to Revision G • Page Deleted table note about input pins and input signals from Absolute Maximum Ratings table ............................................ 6 Changes from Revision E (March 2002) to Revision F Page • Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section ................................................................................................. 1 • Deleted Package/Ordering Information table, see POA at the end of the data sheet............................................................ 1 • Renamed OPAx354 Related Products table to Device Comparison Table ........................................................................... 3 2 Submit Documentation Feedback Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 OPA354, OPA2354, OPA4354 www.ti.com SBOS233G – MARCH 2002 – REVISED APRIL 2018 5 Device Comparison Table FEATURES PRODUCT Shutdown Version of OPAx354 Family OPAx357 200-MHz GBW, Rail-to-Rail Output, CMOS, Shutdown OPAx355 200-MHz GBW, Rail-to-Rail Output, CMOS OPAx356 38-MHz GBW, Rail-to-Rail Input/Output, CMOS OPAx350/OPAx353 75-MHz BW G = 2, Rail-to-Rail Output OPA2631 150-MHz BW G = 2, Rail-to-Rail Output OPA2634 100-MHz BW, Differential Input/Output, 3.3-V Supply THS412x 6 Pin Configuration and Functions OPA354 DBV Package 5-Pin SOT-23 Top View OUT 1 5 OPA354 DDA Package 8-Pin HSOP Top View V+ 1 8 NC IN 2 7 V+ +IN 3 6 OUT V 5 NC NC V 2 +IN 3 4 IN 4 NC – no internal connection PowerPAD must be connected to V− or left floating. Pin Functions: OPA354 PIN NAME I/O DESCRIPTION SOT-23 HSOP –IN 4 2 I Inverting input +IN 3 3 I Noninverting input NC — 1, 5, 8 — No internal connection (can be left floating) OUT 1 6 O Output V– 2 4 — Negative (lowest) supply V+ 5 7 — Positive (highest) supply Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 Submit Documentation Feedback 3 OPA354, OPA2354, OPA4354 SBOS233G – MARCH 2002 – REVISED APRIL 2018 www.ti.com OPA2354 DGK and DDA Packages 8-Pin VSSOP, HSOP Top View OUT A 1 IN A 2 8 V+ 7 OUT B 6 IN B 5 +IN B A +IN A 3 B V (1) 4 PowerPAD must be connected to V− or left floating. Pin Functions: OPA2354 PIN I/O DESCRIPTION NAME NO. –IN A 2 I Inverting input, channel A +IN A 3 I Noninverting input, channel A –IN B 6 I Inverting input, channel B +IN B 5 I Noninverting input, channel B OUT A 1 O Output, channel A OUT B 7 O Output, channel B V– 4 — Negative (lowest) supply V+ 8 — Positive (highest) supply 4 Submit Documentation Feedback Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 OPA354, OPA2354, OPA4354 www.ti.com SBOS233G – MARCH 2002 – REVISED APRIL 2018 OPA4354 D and PW Packages 14-Pin SOIC, TSSOP Top View OUT A 1 IN A 2 A 14 OUT D 13 IN D D +IN A 3 12 +IN D V+ 4 11 V +IN B 5 10 +IN C 6 9 IN C OUT B 7 8 OUT C B IN B C Pin Functions: OPA4354 PIN I/O DESCRIPTION NAME NO. –IN A 2 I Inverting input, channel A +IN A 3 I Noninverting input, channel A –IN B 6 I Inverting input, channel B +IN B 5 I Noninverting input, channel B –IN C 9 I Inverting input, channel C +IN C 10 I Noninverting input, channel C –IN D 13 I Inverting input, channel D +IN D 12 I Noninverting input, channel D OUT A 1 O Output, channel A OUT B 7 O Output, channel B OUT C 8 O Output, channel C OUT D 14 O Output, channel D V– 11 — Negative (lowest) supply V+ 4 — Positive (highest) supply Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 Submit Documentation Feedback 5 OPA354, OPA2354, OPA4354 SBOS233G – MARCH 2002 – REVISED APRIL 2018 www.ti.com 7 Specifications 7.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) (1) MIN Voltage Current Signal input terminals (V−) − (0.5) Signal input terminals –10 Operating, TA V (V+) + 0.5 10 mA Continuous –55 Junction, TJ 150 150 Storage, Tstg (2) UNIT 7.5 Output short circuit (2) Temperature (1) MAX Supply voltage, V+ to V− –65 °C 150 Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Short-circuit to ground, one amplifier per package. 7.2 ESD Ratings VALUE V(ESD) (1) (2) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1) ±2000 Charged-device model (CDM), per JEDEC specification JESD22-C101 (2) UNIT V ±250 JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. 7.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) VS 6 MIN MAX Supply voltage, V– to V+ 2.5 5.5 V Specified temperature –40 125 °C Submit Documentation Feedback UNIT Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 OPA354, OPA2354, OPA4354 www.ti.com SBOS233G – MARCH 2002 – REVISED APRIL 2018 7.4 Thermal Information: OPA354 OPA354 THERMAL METRIC (1) DBV (SOT-23) DDA (HSOP) 5 PINS 8 PINS UNIT 42.5 °C/W RθJA Junction-to-ambient thermal resistance 216.3 RθJC(top) Junction-to-case (top) thermal resistance 84.3 54 °C/W RθJB Junction-to-board thermal resistance 43.1 26.5 °C/W ψJT Junction-to-top characterization parameter 3.8 8 °C/W ψJB Junction-to-board characterization parameter 42.3 26.4 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance — 3.6 °C/W (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. 7.5 Thermal Information: OPA2354 OPA2354 THERMAL METRIC (1) DDA (HSOP) DGK (VSSOP) 8 PINS 8 PINS UNIT 40.6 175.9 °C/W RθJA Junction-to-ambient thermal resistance RθJC(top) Junction-to-case (top) thermal resistance 46 67.8 °C/W RθJB Junction-to-board thermal resistance 20.7 97.1 °C/W ψJT Junction-to-top characterization parameter 5.6 9.3 °C/W ψJB Junction-to-board characterization parameter 20.6 95.5 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance 2.5 — °C/W (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. 7.6 Thermal Information: OPA4354 OPA4354 THERMAL METRIC (1) D (SOIC) PW (TSSOP) 14 PINS 14 PINS UNIT RθJA Junction-to-ambient thermal resistance 83.8 92.6 °C/W RθJC(top) Junction-to-case (top) thermal resistance 70.7 27.5 °C/W RθJB Junction-to-board thermal resistance 59.5 33.6 °C/W ψJT Junction-to-top characterization parameter 11.6 1.9 °C/W ψJB Junction-to-board characterization parameter 37.7 33.1 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance — — °C/W (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 Submit Documentation Feedback 7 OPA354, OPA2354, OPA4354 SBOS233G – MARCH 2002 – REVISED APRIL 2018 www.ti.com 7.7 Electrical Characteristics: VS = 2.7 V to 5.5 V (Single-Supply) at TA = 25°C, RF = 0 Ω, RL = 1 kΩ, and connected to VS / 2, (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX ±2 ±8 UNIT OFFSET VOLTAGE VOS VS = 5 V TA = 25°C Input offset voltage dVOS/dT mV VS = 5 V, TA = −40°C to +125°C Input offset voltage vs temperature ±10 VS = 5 V TA = −40°C to +125°C ±4 VS = 2.7 V to 5.5 V VCM = (VS / 2) − 0.55 V PSRR Input offset voltage vs power supply ±200 µV/°C ±800 µV/V VS = 2.7 V to 5.5 V VCM = (VS / 2) − 0.55 V at TA = −40°C to +125°C ±900 INPUT BIAS CURRENT IB Input bias current IOS Input offset current 3 ±50 pA ±1 ±50 pA NOISE en Input voltage noise density f = 1 MHz 6.5 nV/√Hz in Current noise density f = 1 MHz 50 fA/√Hz INPUT VOLTAGE RANGE VCM CMRR (V−) − 0.1 Common-mode voltage Common-mode rejection ratio VS = 5.5 V –0.1 V < VCM < 3.5 V TA = 25°C 66 VS = 5.5 V –0.1 V < VCM < 3.5 V TA = −40°C to +125°C 64 VS = 5.5 V –0.1 V < VCM < 5.6 V TA = 25°C 56 VS = 5.5 V –0.1 V < VCM < 5.6 V TA = −40°C to +125°C 55 (V+) + 0.1 V 80 dB 68 INPUT IMPEDANCE Differential 1013 || 2 Ω || pF Common-mode 1013 || 2 Ω || pF OPEN-LOOP GAIN AOL Open-loop gain VS = 5.5 V 0.3 V < VO < 4.7 V TA = 25°C 94 VS = 5 V 0.4 V < VO < 4.6 V TA = −40°C to +125°C 90 110 dB FREQUENCY RESPONSE f−3dB GBW f0.1dB 8 Small-signal bandwidth At G = +1 VO = 100 mVPP RF = 25 Ω 250 At G = +2 VO = 100 mVPP 90 Gain-bandwidth product G = +10 Bandwidth for 0.1-dB gain flatness At G = +2 VO = 100 mVPP Submit Documentation Feedback MHz 100 MHz 40 MHz Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 OPA354, OPA2354, OPA4354 www.ti.com SBOS233G – MARCH 2002 – REVISED APRIL 2018 Electrical Characteristics: VS = 2.7 V to 5.5 V (Single-Supply) (continued) at TA = 25°C, RF = 0 Ω, RL = 1 kΩ, and connected to VS / 2, (unless otherwise noted) PARAMETER SR TEST CONDITIONS Slew rate Settling time Overload recovery time TYP VS = 5 V, G = +1, 4-V step 150 VS = 5 V, G = +1, 2-V step 130 VS = 3 V, G = +1, 2-V step 110 At G = +1 VO = 200 mVPP 10% to 90% Rise-and-fall time MIN 2 At G = +1, VO = 2 VPP, 10% to 90% 11 0.1%, VS = 5 V, G = +1 2-V output step 30 0.01%, VS = 5 V, G = +1 2-V output step 60 VIN × Gain = VS Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 MAX UNIT V/µs ns ns 5 Submit Documentation Feedback ns 9 OPA354, OPA2354, OPA4354 SBOS233G – MARCH 2002 – REVISED APRIL 2018 www.ti.com Electrical Characteristics: VS = 2.7 V to 5.5 V (Single-Supply) (continued) at TA = 25°C, RF = 0 Ω, RL = 1 kΩ, and connected to VS / 2, (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT FREQUENCY RESPONSE (CONTINUED) Second harmonic At G = +1, f = 1 MHz, VO = 2 VPP RL = 200 Ω, VCM = 1.5 V –75 Third harmonic At G = +1, f = 1 MHz VO = 2 VPP RL = 200 Ω, VCM = 1.5 V –83 Harmonic distortion dBc Differential gain error NTSC, RL = 150 Ω Differential phase error NTSC, RL = 150 Ω 0.09 f = 5 MHz –100 Channel-to-channel crosstalk OPA2354 0.02% OPA4354 ° dB –84 OUTPUT VS = 5 V, RL = 1 kΩ, AOL > 94 dB TA = 25°C Voltage output swing from rail IO 0.1 V VS = 5 V, RL = 1 kΩ, AOL > 90 dB TA = −40°C to +125°C Output current, single, dual, quad (1) (2) 0.4 VS = 5 V 100 VS = 3 V Closed-loop output impedance RO 0.3 mA 50 f < 100 kHz Open-loop output resistance mA 0.05 Ω 35 Ω POWER SUPPLY VS IQ Specified voltage 2.7 5 Operating voltage 2.5 5.5 Quiescent current (per amplifier) TA = 25°C, VS = 5 V (enabled) IO = 0 4.9 TA = –40°C to +125°C 6 V mA 7.5 THERMAL SHUTDOWN: JUNCTION TEMPERATURE Shutdown 160 °C Reset from shutdown 140 °C THERMAL RANGE (1) (2) 10 Specified –40 125 °C Operating –55 150 °C Storage –65 150 °C See typical characteristic curves, Output Voltage Swing vs Output Current (Figure 20 and Figure 22). Specified by design. Submit Documentation Feedback Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 OPA354, OPA2354, OPA4354 www.ti.com SBOS233G – MARCH 2002 – REVISED APRIL 2018 7.8 Typical Characteristics at TA = 25°C, VS = 5 V, G = +1, RF = 0 Ω, RL = 1 kΩ, and connected to VS / 2, (unless otherwise noted) 3 VO = 0.1VPP, RF = 604W 0 Normalized Gain (dB) 0 Normalized Gain (dB) 3 G = +1 RF = 25W VO = 0.1VPP G = +2, RF = 604W -3 G = +5, RF = 604W -6 G = +10, RF = 604W -9 -12 -3 G = -1 -6 G = -5 G = -10 -12 -15 100k 1M 10M Frequency (Hz) 100M -15 100k 1G 1M 10M Frequency (Hz) 100M 1G Figure 2. Inverting Small-Signal Frequency Response Output Voltage (40mV/div) Output Voltage (500mV/div) Figure 1. Noninverting Small-Signal Frequency Response Time (20ns/div) Time (20ns/div) Figure 3. Noninverting Small-Signal Step Response 0.5 0.4 Figure 4. Noninverting Large-Signal Step Response -50 VO = 0.1VPP Harmonic Distortion (dBc) 0.3 Normalized Gain (dB) G = -2 -9 G = +1 RF = 25W 0.2 0.1 0 -0.1 -0.2 G = +2 RF = 604W -0.3 G = -1 f = 1MHz RL = 200W -60 -70 2nd Harmonic -80 -90 -0.4 -0.5 100k 3rd Harmonic -100 1M 10M Frequency (Hz) 100M Figure 5. 0.1-dB Gain Flatness 1G 0 1 2 Output Voltage (VPP) 3 4 Figure 6. Harmonic Distortion vs Output Voltage Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 Submit Documentation Feedback 11 OPA354, OPA2354, OPA4354 SBOS233G – MARCH 2002 – REVISED APRIL 2018 www.ti.com Typical Characteristics (continued) at TA = 25°C, VS = 5 V, G = +1, RF = 0 Ω, RL = 1 kΩ, and connected to VS / 2, (unless otherwise noted) -50 -50 Harmonic Distortion (dBc) -60 -70 2nd Harmonic -80 -90 VO = 2VPP f = 1MHz RL = 200W -60 Harmonic Distortion (dBc) VO = 2VPP f = 1MHz RL = 200W -70 2nd Harmonic -80 3rd Harmonic -90 3rd Harmonic -100 -100 1 10 1 10 Gain (V/V) Gain (V/V) Figure 7. Harmonic Distortion vs Noninverting Gain -60 Figure 8. Harmonic Distortion vs Inverting Gain -50 G = +1 VO = 2VPP RL = 200W VCM = 1.5V -70 2nd Harmonic -80 3rd Harmonic -90 G = +1 VO = 2VPP f = 1MHz VCM = 1.5V -60 Harmonic Distortion (dBc) Harmonic Distortion (dBc) -50 -70 2nd Harmonic -80 3rd Harmonic -90 -100 -100 100k 1M Frequency (Hz) 100 10M 1k RL (W) Figure 9. Harmonic Distortion vs Frequency Figure 10. Harmonic Distortion vs Load Resistance 3 10k RL = 10kW 1k Normalized Gain (dB) Voltage Noise (nV/ÖHz), Current Noise (fA/ÖHz) 0 Current Noise Voltage Noise 100 10 -3 -6 G = +1 R F = 0W VO = 0.1VPP CL = 0pF RL = 1kW RL = 100W -9 RL = 50W -12 1 10 100 1k 10k 100k 1M 10M 100M -15 100k 1M Frequency (Hz) Figure 11. Input Voltage and Current Noise Spectral Density vs Frequency 12 Submit Documentation Feedback 10M Frequency (Hz) 100M 1G Figure 12. Frequency Response for Various RL Values Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 OPA354, OPA2354, OPA4354 www.ti.com SBOS233G – MARCH 2002 – REVISED APRIL 2018 Typical Characteristics (continued) at TA = 25°C, VS = 5 V, G = +1, RF = 0 Ω, RL = 1 kΩ, and connected to VS / 2, (unless otherwise noted) 160 9 G = +1 VO = 0.1VPP RS = 0W 6 Normalized Gain (dB) 3 120 100 -3 RS (W) 0 CL = 47pF 80 -6 60 -9 40 VIN VO CL 1kW 20 0 -15 100k 1M 10M Frequency (Hz) 100M 1 1G Figure 13. Frequency Response for Various CL Values 1k 10 100 Capacitive Load (pF) Figure 14. Recommended RS vs Capacitive Load 100 3 G = +1, VO = 0.1VPP 0 CL = 5.6pF, RS = 0W CMRR 80 CL = 47pF, RS = 140W -3 CMRR, PSRR (dB) Normalized Gain (dB) RS OPA354 CL = 5.6pF -12 CL = 100pF, RS = 120W -6 -9 VIN RS VO OPA354 CL -12 PSRR+ 60 PSRR40 20 1kW 0 -15 100k 1M 10M Frequency (Hz) 1G 100M 10k Figure 15. Frequency Response vs Capacitive Load 100k 1M 10M Frequency (Hz) 100M 1G Figure 16. Common-Mode Rejection Ratio and PowerSupply Rejection Ratio vs Frequency 180 0.8 160 0.7 140 120 dG/dP (%/degrees) Open-Loop Phase (degrees) Open-Loop Gain (dB) For 0.1dB Flatness 140 CL = 100pF Phase 100 80 60 40 Gain 20 0.6 0.5 dP 0.4 0.3 0.2 0 0.1 dG -20 0 -40 10 100 1k 10k 100k 1M Frequency (Hz) 10M 100M Figure 17. Open-Loop Gain and Phase 1G 1 2 3 Number of 150W Loads 4 Figure 18. Composite Video Differential Gain and Phase Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 Submit Documentation Feedback 13 OPA354, OPA2354, OPA4354 SBOS233G – MARCH 2002 – REVISED APRIL 2018 www.ti.com Typical Characteristics (continued) at TA = 25°C, VS = 5 V, G = +1, RF = 0 Ω, RL = 1 kΩ, and connected to VS / 2, (unless otherwise noted) 3 1k Output Voltage (V) Input Bias Current (pA) 10k 100 10 1 2 +125°C +25°C -55°C 1 0 -55 -35 -15 5 25 45 65 Temperature (°C) 85 105 125 135 0 20 40 60 80 Output Current (mA) 100 120 VS = 3 V Figure 19. Input Bias Current vs Temperature Figure 20. Output Voltage Swing vs Output Current 5 7 4 VS = 5V 5 Output Voltage (V) Supply Current (mA) 6 4 VS = 2.5V 3 2 3 +25°C +125°C -55°C 2 1 1 0 0 -55 -35 -15 5 25 45 65 Temperature (°C) 85 0 105 125 135 25 50 75 100 125 Output Current (mA) 150 175 200 VS = 5 V Figure 21. Supply Current vs Temperature Figure 22. Output Voltage Swing vs Output Current 6 100 VS = 5.5V 10 Output Voltage (VPP) Output Impedance (W) 5 1 0.1 Maximum Output Voltage without Slew RateInduced Distortion 4 3 VS = 2.7V 2 OPA354 1 ZO 0.01 100k 0 1M 10M Frequency (Hz) 100M 1G Figure 23. Closed-Loop Output Impedance vs Frequency 14 Submit Documentation Feedback 1 10 Frequency (MHz) 100 Figure 24. Maximum Output Voltage vs Frequency Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 OPA354, OPA2354, OPA4354 www.ti.com SBOS233G – MARCH 2002 – REVISED APRIL 2018 Typical Characteristics (continued) at TA = 25°C, VS = 5 V, G = +1, RF = 0 Ω, RL = 1 kΩ, and connected to VS / 2, (unless otherwise noted) 120 0.5 0.4 110 Open-Loop Gain (dB) Output Error (%) RL = 1kW VO = 2VPP 0.3 0.2 0.1 0 -0.1 -0.2 100 90 80 -0.3 -0.4 70 -0.5 0 10 20 30 40 50 60 Time (ns) 70 80 90 100 -55 Figure 25. Output Settling Time to 0.1% -35 5 -15 25 45 65 Temperature (°C) 85 105 125 135 Figure 26. Open-Loop Gain vs Temperature 100 Population CMRR, PSRR (dB) 90 Common-Mode Rejection Ratio 80 Power-Supply Rejection Ratio 70 60 50 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 Offset Voltage (mV) 4 5 6 7 8 -55 Figure 27. Offset Voltage Production Distribution -35 -15 5 25 45 65 Temperature (°C) 85 105 125 135 Figure 28. Common-Mode Rejection Ratio and PowerSupply Rejection Ratio vs Temperature Crosstalk, Input-Referred (dB) 0 -20 -40 OPA4354 -60 OPA2354 -80 -100 -120 100k 1M 10M 100M 1G Frequency (Hz) Figure 29. Channel-to-Channel Crosstalk Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 Submit Documentation Feedback 15 OPA354, OPA2354, OPA4354 SBOS233G – MARCH 2002 – REVISED APRIL 2018 www.ti.com 8 Detailed Description 8.1 Overview The OPAx354 is a CMOS, rail-to-rail I/O, high-speed, voltage-feedback operational amplifier designed for video, high-speed, and other applications. It is available as a single, dual, or quad op amp. The amplifier features a 100-MHz gain bandwidth, and 150-V/µs slew rate, but the amplifier is unity-gain stable and can operate as a 1-V/V voltage follower. 8.2 Functional Block Diagram V+ Reference Current VIN+ VINVBIAS1 Class AB Control Circuitry VO VBIAS2 V(Ground) 16 Submit Documentation Feedback Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 OPA354, OPA2354, OPA4354 www.ti.com SBOS233G – MARCH 2002 – REVISED APRIL 2018 8.3 Feature Description 8.3.1 Operating Voltage The OPAx354 is specified over a power-supply range of 2.7 V to 5.5 V (±1.35 V to ±2.75 V). However, the supply voltage may range from 2.5 V to 5.5 V (±1.25 V to ±2.75 V). Supply voltages higher than 7.5 V (absolute maximum) can permanently damage the amplifier. Parameters that vary over supply voltage or temperature are shown in the Typical Characteristics section of this data sheet. 8.3.2 Rail-to-Rail Input The specified input common-mode voltage range of the OPAx354 extends 100 mV beyond the supply rails. This extended range is achieved with a complementary input stage: an N-channel input differential pair in parallel with a P-channel differential pair, as shown in the Functional Block Diagram. The N-channel pair is active for input voltages close to the positive rail, typically (V+) − 1.2 V to 100 mV above the positive supply, while the P-channel pair is on for inputs from 100 mV below the negative supply to approximately (V+) − 1.2 V. There is a small transition region, typically (V+) − 1.5 V to (V+) − 0.9 V, in which both pairs are on. This 600-mV transition region vary ±500 mV with process variation. Therefore, the transition region (both input stages on) range from (V+) − 2 V to (V+) − 1.5 V on the low end, up to (V+) − 0.9 V to (V+) − 0.4 V on the high end. A double-folded cascode adds the signal from the two input pairs and presents a differential signal to the class AB output stage. 8.3.3 Rail-to-Rail Output A class AB output stage with common-source transistors achieves rail-to-rail output. For high-impedance loads (> 200 Ω), the output voltage swing is typically 100 mV from the supply rails. With 10-Ω loads, a useful output swing is achieved while maintaining high open-loop gain. See the typical characteristic curves, Output Voltage Swing vs Output Current (Figure 20 and Figure 22). 8.3.4 Output Drive The OPAx354 output stage supplies a continuous output current of ±100 mA and yet provide approximately 2.7 V of output swing on a 5-V supply, as shown in Figure 30. For maximum reliability, TI does not recommend running a continuous DC current in excess of ±100 mA. See the typical characteristic curves, Output Voltage Swing vs Output Current (Figure 20 and Figure 22). For supplying continuous output currents greater than ±100 mA, the OPAx354 may be operated in parallel, as shown in Figure 31. R 2 + 1 NŸ V 1 5V C 1 50 pF 1 µF R 1 10 NŸ V+ OPA354 R 3 V + IN V R 10 NŸ R 4 1 V In = 100 mA Out, as shown SHUNT 1Ÿ 1 NŸ Laser Diode Figure 30. Laser Diode Driver Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 Submit Documentation Feedback 17 OPA354, OPA2354, OPA4354 SBOS233G – MARCH 2002 – REVISED APRIL 2018 www.ti.com Feature Description (continued) The OPAx354 provides peak currents up to 200 mA, which corresponds to the typical short-circuit current. Therefore, an on-chip thermal shutdown circuit is provided to protect the OPAx354 from dangerously high junction temperatures. At 160°C, the protection circuit shuts down the amplifier. Normal operation resumes when the junction temperature cools to below 140°C. R 2 10 NŸ C 1 200 pF 5V 1 µF R 1 100 NŸ R 5 1Ÿ OPA2354 R 3 100 NŸ + R 6 1Ÿ 2 V In = 200 mA out, as shown R SHUNT 1Ÿ OPA2354 R 4 10 NŸ Laser Diode Figure 31. Parallel Operation 8.3.5 Video The OPAx354 output stage is capable of driving standard back-terminated 75-Ω video cables, as shown in Figure 32. By back-terminating a transmission line, the output stage does not exhibit a capacitive load to the driver. A properly back-terminated 75-Ω cable does not appear as capacitance; the cable presents a 150-Ω resistive load to the OPAx354 output. 5V Video In 75 Ÿ 75 Ÿ OPA354 Video Output 2.5 V 604 Ÿ 604 Ÿ 2.5 V Figure 32. Single-Supply Video Line Driver The OPAx354 is used as an amplifier for RGB graphic signals, which feature a voltage of zero at the video black level, by offsetting and AC-coupling the signal. See Figure 33. 18 Submit Documentation Feedback Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 OPA354, OPA2354, OPA4354 www.ti.com SBOS233G – MARCH 2002 – REVISED APRIL 2018 Feature Description (continued) 604 Ÿ 3V + V+ 75 Ÿ 1/2 OPA2354 1 Red 10 nF 604 Ÿ R (1) 1 µF Red 75 Ÿ R 2 V+ R (1) 1 Green R 604 Ÿ 75 Ÿ 1/2 OPA2354 Green 75 Ÿ 2 604 Ÿ 604 Ÿ 3V + 1 µF V+ (1) Blue 10 nF 604 Ÿ 75 Ÿ R OPA354 1 Blue 75 Ÿ R 2 (1) Source video signal offset 300 mV above ground to accommodate op amp swing−to−ground capability. Figure 33. RGB Cable Driver Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 Submit Documentation Feedback 19 OPA354, OPA2354, OPA4354 SBOS233G – MARCH 2002 – REVISED APRIL 2018 www.ti.com Feature Description (continued) 8.3.6 Driving Analog-to-Digital converters The OPAx354 series op amps offer 60 ns of settling time to 0.01%, making the series a good choice for driving high- and medium-speed sampling A/D converters and reference circuits. The OPAx354 series provide an effective means of buffering the A/D converter input capacitance and resulting charge injection while providing signal gain. For applications requiring high DC accuracy, the OPA350 series is recommended. Figure 34 shows the OPAx354 driving an A/D converter. With the OPAx354 in an inverting configuration, a capacitor across the feedback resistor is used to filter high-frequency noise in the signal. 5V 330 pF 5 NŸ V 5 NŸ V V+ IN ADS7816, ADS7861, or ADS7864 12-Bit A/D Converter +In OPA354 2.5 V REF In GND V = 0 V to 5 V for 0-V to 5-V output. IN A/D converter input = 0 V to VREF Figure 34. The OPAx354 in Inverting Configuration Driving the ADS7816 8.3.7 Capacitive Load and Stability The OPAx354 series op amps drives a wide range of capacitive loads. However, all op amps may become unstable under certain conditions. Op amp configuration, gain, and load value are just a few of the factors to consider when determining stability. An op amp in unity-gain configuration is most susceptible to the effects of capacitive loading. The capacitive load reacts with the device output resistance, along with any additional load resistance, to create a pole in the small-signal response that degrades the phase margin. See the Frequency Response for Various CL typical characteristic curve (Figure 13) for details. The OPAx354 topology enhances its ability to drive capacitive loads. In unity gain, these op amps perform well with large capacitive loads. See the Recommended RS vs Capacitive Load (Figure 14) and Frequency Response vs Capacitive Load (Figure 15) typical characteristic curves for details. One method of improving capacitive load drive in the unity-gain configuration is to insert a 10-Ω to 20-Ω resistor in series with the output, as shown in Figure 35. This configuration significantly reduces ringing with large capacitive loads; see the Frequency Response vs Capacitive Load typical characteristic curve (Figure 15). However, if there is a resistive load in parallel with the capacitive load, RS creates a voltage divider. This voltage division introduces a DC error at the output and slightly reduces output swing. This error may be insignificant. For instance, with RL = 10 kΩ and RS = 20 Ω, there is an error of approximately 0.2% at the output. V+ R S V OPA354 V IN R L OUT C L Figure 35. Series Resistor in Unity-Gain Configuration Improves Capacitive Load Drive 20 Submit Documentation Feedback Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 OPA354, OPA2354, OPA4354 www.ti.com SBOS233G – MARCH 2002 – REVISED APRIL 2018 Feature Description (continued) 8.3.8 Wideband Transimpedance Amplifier Wide bandwidth, low input bias current, low input voltage, and current noise make the OPAx354 a preferred wideband photodiode transimpedance amplifier for low-voltage single-supply applications. Low-voltage noise is important because photodiode capacitance causes the effective noise gain of the circuit to increase at high frequency. The key elements to a transimpedance design (as shown in Figure 36) are the expected diode capacitance [including the parasitic input common-mode and differential-mode input capacitance (2 + 2) pF for the OPAx354], the desired transimpedance gain (RF), and the gain-bandwidth product (GBW) for the OPAx354 (100 MHz, typical). With these three variables set, the feedback capacitor value (CF) may be set to control the frequency response. C F < 1 pF (prevents gain peaking) R F 10 0Ÿ +V O C D OPA354 V OUT Figure 36. Transimpedance Amplifier To achieve a maximally flat, second-order, Butterworth frequency response, the feedback pole must be set as shown in Equation 1: 1 = 2pRFCF GBP 4pRFCD (1) Typical surface-mount resistors have a parasitic capacitance of approximately 0.2 pF that must be deducted from the calculated feedback capacitance value. Bandwidth is calculated by Equation 2: f-3dB = GBP Hz 2pRFCD (2) For even higher transimpedance bandwidth, the high-speed CMOS OPA355 (200-MHz GBW) or the OPA655 (400-MHz GBW) may be used. 8.4 Device Functional Modes The OPAx354 family of devices is powered on when the supply is connected. The devices can operate as singlesupply operational amplifiers or dual-supply amplifiers depending on the application. The devices are used with asymmetrical supplies as long as the differential voltage (V– to V+) is at least 1.8 V and no greater than 5.5 V (example: V– set to –3.5 V and V+ set to 1.5 V). Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 Submit Documentation Feedback 21 OPA354, OPA2354, OPA4354 SBOS233G – MARCH 2002 – REVISED APRIL 2018 www.ti.com 9 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 9.1 Application Information The OPAx354 family of devices is a CMOS, rail-to-rail I/O, high-speed, voltage-feedback operational amplifier designed for video, high-speed, and other applications. The OPAx354 family of devices is available as a single, dual, or quad op amp. The amplifier features a 100-MHz gain bandwidth, and 150-V/µs slew rate, but it is unitygain stable and operates as a 1-V/V voltage follower. 9.2 Typical Application Wide gain bandwidth, low input bias current, low input voltage, and current noise make the OPAx354 family of devices an ideal wideband photodiode transimpedance amplifier. Low-voltage noise is important because photodiode capacitance causes the effective noise gain of the circuit to increase at high frequency. The key elements to a transimpedance design, as shown in Figure 37, are the expected diode capacitance, (which include the parasitic input common-mode and differential-mode input capacitance) the desired transimpedance gain, and the gain-bandwidth (GBW) for the OPAx354 family of devices (20 MHz). With these three variables set, the feedback capacitor value is set to control the frequency response. Feedback capacitance includes the stray capacitance , which is 0.2 pF for a typical surface-mount resistor. Figure 37. Dual-Supply Transimpedance Amplifier 9.2.1 Design Requirements For this design example, use the parameters listed in Table 1 as the input parameters. Table 1. Design Parameters 22 PARAMETER EXAMPLE VALUE Supply voltage, V(V+) 2.5 V Supply voltage, V(V-) –2.5 V Submit Documentation Feedback Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 OPA354, OPA2354, OPA4354 www.ti.com SBOS233G – MARCH 2002 – REVISED APRIL 2018 C(F) is optional to prevent gain peaking. C(F) includes the stray capacitance of R(F). 9.2.2 Detailed Design Procedure To achieve a maximally-flat, second-order Butterworth frequency response, set the feedback pole using Equation 3. (3) Calculate the bandwidth using Equation 4. (4) 9.2.2.1 Optimizing the Transimpedance Circuit To achieve the best performance, components must be selected according to the following guidelines: 1. For lowest noise, select R(F) to create the total required gain. Using a lower value for R(F) and adding gain after the transimpedance amplifier generally produces poorer noise performance. The noise produced by R(F) increases with the square-root of R(F), whereas the signal increases linearly. Therefore, signal-to-noise ratio improves when all the required gain is placed in the transimpedance stage. 2. Minimize photodiode capacitance and stray capacitance at the summing junction (inverting input). This capacitance causes the voltage noise of the op amp to amplify (increasing amplification at high frequency). Using a low-noise voltage source to reverse-bias a photodiode reduce the capacitance. Smaller photodiodes have lower capacitance. Use optics to concentrate light on a small photodiode. 3. Noise increases with increased bandwidth. Limit the circuit bandwidth to only the required bandwidth. Use a capacitor across the R(F) to limit bandwidth, even if a capacitor not required for stability. 4. Circuit board leakage degrades the performance of an otherwise well-designed amplifier. Clean the circuit board carefully. A circuit board guard trace that encircles the summing junction and is driven at the same voltage helps control leakage. 9.2.3 Application Curve Figure 38. AC Transfer Function Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 Submit Documentation Feedback 23 OPA354, OPA2354, OPA4354 SBOS233G – MARCH 2002 – REVISED APRIL 2018 www.ti.com 10 Power Supply Recommendations The OPAx354 family of devices is specified for operation from 2.5 V to 5.5 V (±1.25 to ±2.75 V); many specifications apply from –40°C to +125°C. Parameters that exhibit significant variance with regard to operating voltage or temperature are shown Typical Characteristics. Place 0.1-µF bypass capacitors close to the power-supply pins to reduce errors coupling in from noisy or high impedance power supplies. For more detailed information on bypass capacitor placement, see the Layout Guidelines section.. 11 Layout 11.1 Layout Guidelines Good high-frequency printed-circuit board (PCB) layout techniques must be employed for the OPAx354. Generous use of ground planes, short and direct signal traces, and a suitable bypass capacitor located at the V+ pin ensure clean, stable operation. Large areas of copper provides a means of dissipating heat that is generated in normal operation. TI does not recommend using sockets with any high-speed amplifier. A 10-nF ceramic bypass capacitor is the minimum recommended value; adding a 1-µF or larger tantalum capacitor in parallel is beneficial when driving a low-resistance load. Providing adequate bypass capacitance is essential to achieving low harmonic and intermodulation distortion. 11.2 Layout Example Figure 39. Operational Amplifier Board Layout for Noninverting Configuration 11.3 Power Dissipation Power dissipation depends on power-supply voltage, signal and load conditions. With DC signals, power dissipation is equal to the product of output current times the voltage across the conducting output transistor, VS − VO. Power dissipation is minimized by using the lowest possible power-supply voltage necessary to assure the required output voltage swing. For resistive loads, the maximum power dissipation occurs at a DC output voltage of one-half the power-supply voltage. Dissipation with AC signals is lower. AB-039 Power Amplifier Stress and Power Handling Limitations explains how to calculate or measure power dissipation with unusual signals and loads See www.ti.com for more details. 24 Submit Documentation Feedback Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 OPA354, OPA2354, OPA4354 www.ti.com SBOS233G – MARCH 2002 – REVISED APRIL 2018 Power Dissipation (continued) Any tendency to activate the thermal protection circuit indicates excessive power dissipation or an inadequate heat sink. For reliable operation, junction temperature must be limited to 150°C (maximum.) To estimate the margin of safety in a complete design, increase the ambient temperature until the thermal protection is triggered at 160°C. The thermal protection must trigger more than 35°C above the maximum expected ambient condition of the application. 11.4 PowerPAD Thermally-Enhanced Package In addition to the regular 5-pin SOT-23 and 9-pin VSSOP packages, the single and dual versions of the OPAx354 also come in an 8-pin SOIC PowerPAD package. The 98-pin SO with PowerPAD is a standard size 8pin SOIC package where the exposed leadframe on the bottom of the package is soldered directly to the PCB to create a low thermal resistance. This direct attachment enhances the OPAx354 power dissipation capability significantly, and eliminates the use of bulky heat sinks and slugs that are traditionally used in thermal packages. This package is easily mounted using standard PCB assembly techniques. NOTE Because the 8-pin HSOP PowerPAD is pin-compatible with standard 8-pin SOIC packages, the OPA354 and OPA2354 can directly replace operational amplifiers in existing sockets. Soldering the PowerPAD to the PCB is always required, even with applications that have low power dissipation. This configuration provides the necessary thermal and mechanical connection between the leadframe die pad and the PCB. The PowerPAD package is designed so that the leadframe die pad (or thermal pad) is exposed on the bottom of the device, as shown in Figure 40. This exposed die provides an extremely low thermal resistance (RθJC) path between the die and the exterior of the package. The thermal pad on the bottom of the device can then be soldered directly to the PCB, using the PCB as a heat sink. In addition, plated-through holes (vias) provide a low thermal resistance heat flow path to the back side of the PCB. Leadframe (Copper Alloy) IC (Silicon) Mold Compound (Plastic) Die Attach (Epoxy) Leadframe Die Pad Exposed at Base of the Package (Copper Alloy) Figure 40. Section View of a PowerPAD Package 11.5 PowerPAD Assembly Process The PowerPAD must be connected to the most negative supply voltage for the device, which is ground in singlesupply applications and V− in split-supply applications. Prepare the PCB with a top-side etch pattern, as shown in Figure 41. The exact land design may vary based on the specific assembly process requirements. There must be etch for the leads and etch for the thermal land. Place the recommended number of plated-through holes (or thermal vias) in the area of the thermal pad. These holes must be 13 mils (.013 in) in diameter. The holes are small so that solder wicking through the holes is not a problem during reflow. TI recommends a minimum of five holes for the 8-pin HSOP PowerPAD package, as shown in Figure 41. Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 Submit Documentation Feedback 25 OPA354, OPA2354, OPA4354 SBOS233G – MARCH 2002 – REVISED APRIL 2018 www.ti.com PowerPAD Assembly Process (continued) Thermal Land (Copper) Minimum Size 4.8mm x 3.8mm (189 mils x 150 mils) OPTIONAL: Additional 4 vias outside of thermal pad area but under the package. REQUIRED: Thermal pad area 2.286mm x 2.286mm (90 mils x 90 mils) with 5 vias (via diameter = 13 mils) Figure 41. 8-Pin PowerPAD PCB Etch and Via Pattern TI recommends, but does not require, placing a small number of additional holes under the package and outside the thermal pad area. These holes provide additional heat paths between the copper thermal land and the ground plane. The holes may be larger because the holes are not in the area to be soldered, so wicking is not a problem. This technique is shown in Figure 41. Connect all holes, including those within the thermal pad area and outside the pad area, to the internal ground plane or other internal copper plane for single-supply applications, and to V− for split-supply applications. When laying out these holes, do not use the typical web or spoke via connection methodology, as shown in Figure 42. Web connections have a high thermal resistance connection that is useful for slowing the heat transfer during soldering operations. This feature makes soldering the vias that have ground plane connections easier. However, in this application, low thermal resistance is desired for the most efficient heat transfer. Therefore, the holes under the PowerPAD package must make connection to the internal ground plane with a complete connection around the entire circumference of the plated-through hole. Solid Via RECOMMENDED Web or Spoke Via NOT RECOMMENDED (due to poor heat conduction) Figure 42. Via Connection The top-side solder mask must leave the pad connections and the thermal pad area exposed. The thermal pad area must leave the 13-mil holes exposed. The larger holes outside the thermal pad area may be covered with a solder mask. Apply solder paste to the exposed thermal pad area and all of the package pins. With these preparatory steps in place, the PowerPAD device is placed in position and run through the solder reflow operation as any standard surface-mount component. This preparation and processing results in a part that is properly installed. For detailed information on the PowerPAD package, including thermal modeling considerations and repair procedures, see PowerPAD Thermally Enhanced Package on www.ti.com. 26 Submit Documentation Feedback Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 OPA354, OPA2354, OPA4354 www.ti.com SBOS233G – MARCH 2002 – REVISED APRIL 2018 12 Device and Documentation Support 12.1 Documentation Support For related documentation see the following: • Texas Instruments, ADS8326 16-Bit, High-Speed, 2.7V to 5.5V microPower Sampling ANALOG-TO-DIGITAL CONVERTER • Texas Instruments, Circuit Board Layout Techniques • Texas Instruments, Compensate Transimpedance Amplifiers Intuitively • Texas Instruments, FilterPro™ User's Guide • Texas Instruments, Noise Analysis for High-Speed Op Amps • Texas Instruments, OPA380 and OPA2380 Precision, High-Speed Transimpedance Amplifier • Texas Instruments, OPA355, OPA2355, and OPA3355 200MHz, CMOS OPERATIONAL AMPLIFIER WITH SHUTDOWN • Texas Instruments, OPA656 Wideband, Unity-Gain Stable, FET-Input OPERATIONAL AMPLIFIER • Texas Instruments, POWER AMPLIFIER STRESS AND POWER HANDLING LIMITATIONS • Texas Instruments, PowerPAD Thermally Enhanced Package 12.2 Related Links Table 2 lists quick access links. Categories include technical documents, support and community resources, tools and software, and quick access to sample or buy. Table 2. Related Links PARTS PRODUCT FOLDER ORDER NOW TECHNICAL DOCUMENTS TOOLS & SOFTWARE SUPPORT & COMMUNITY OPA354 Click here Click here Click here Click here Click here OPA2354 Click here Click here Click here Click here Click here OPA4354 Click here Click here Click here Click here Click here 12.3 Receiving Notification of Documentation Updates To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper right corner, click on Alert me to register and receive a weekly digest of any product information that has changed. For change details, review the revision history included in any revised document. 12.4 Community Resources The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support. 12.5 Trademarks PowerPAD, E2E are trademarks of Texas Instruments. All other trademarks are the property of their respective owners. 12.6 Electrostatic Discharge Caution These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 Submit Documentation Feedback 27 OPA354, OPA2354, OPA4354 SBOS233G – MARCH 2002 – REVISED APRIL 2018 www.ti.com 12.7 Glossary SLYZ022 — TI Glossary. This glossary lists and explains terms, acronyms, and definitions. 13 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. 28 Submit Documentation Feedback Copyright © 2002–2018, Texas Instruments Incorporated Product Folder Links: OPA354 OPA2354 OPA4354 PACKAGE OPTION ADDENDUM www.ti.com 14-Dec-2022 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) Samples (4/5) (6) OPA2354AIDDA ACTIVE SO PowerPAD DDA 8 75 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 OPA 2354A Samples OPA2354AIDDAG3 ACTIVE SO PowerPAD DDA 8 75 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 OPA 2354A Samples OPA2354AIDDAR ACTIVE SO PowerPAD DDA 8 2500 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 OPA 2354A Samples OPA2354AIDDARG3 ACTIVE SO PowerPAD DDA 8 2500 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 OPA 2354A Samples OPA2354AIDGKR ACTIVE VSSOP DGK 8 2500 RoHS & Green Call TI | SN | NIPDAUAG Level-2-260C-1 YEAR -40 to 125 OACI Samples OPA2354AIDGKT ACTIVE VSSOP DGK 8 250 RoHS & Green Call TI | SN | NIPDAUAG Level-2-260C-1 YEAR -40 to 125 OACI Samples OPA2354AIDGKTG4 ACTIVE VSSOP DGK 8 250 RoHS & Green Call TI Level-2-260C-1 YEAR -40 to 125 OACI Samples OPA354AIDBVR ACTIVE SOT-23 DBV 5 3000 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 125 OABI Samples OPA354AIDBVT ACTIVE SOT-23 DBV 5 250 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 125 OABI Samples OPA354AIDBVTG4 ACTIVE SOT-23 DBV 5 250 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 125 OABI Samples OPA354AIDDA ACTIVE SO PowerPAD DDA 8 75 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 OPA 354A Samples OPA354AIDDAG3 ACTIVE SO PowerPAD DDA 8 75 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 OPA 354A Samples OPA354AIDDAR ACTIVE SO PowerPAD DDA 8 2500 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 OPA 354A Samples OPA4354AID ACTIVE SOIC D 14 50 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 125 OPA4354A Samples OPA4354AIDR ACTIVE SOIC D 14 2500 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 125 OPA4354A Samples OPA4354AIPWR ACTIVE TSSOP PW 14 2500 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 125 OPA 4354A Samples OPA4354AIPWRG4 ACTIVE TSSOP PW 14 2500 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 125 OPA 4354A Samples OPA4354AIPWT ACTIVE TSSOP PW 14 250 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 125 OPA 4354A Samples Addendum-Page 1 PACKAGE OPTION ADDENDUM www.ti.com 14-Dec-2022 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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