TC2411

Datasheet (Advance Information) TC2411 14-Bit, 1 GSPS Digital-to-Analog Converter with Standby Mode of Operation The TC2411 is a 14-bit, 1 GSPS digital-to-analog converter that delivers exceptional high-frequency performance. The TC2411 is designed to support single or multiple transmit IF signals up to 500 MHz and to deliver superior dynamic range at a sampling rate up to a guaranteed 1 GSPS. A power down feature has been incorporated into the TC2411 which allows the part to be placed into a Standby Mode of operation. • • • High resolution High Clock rate Standby Mode for lower power dissipation Applications The TC2411’s high sample rate makes it ideal for the following applications: • Signal generation • Direct digital synthesis (DDS) • Test and measurement • Software radio • Single- and multi-carrier transceivers • Radar (Including Burst mode capability) Technical Features • • • • • • • • • Signal-Noise Ratio…..……......74dBc @126MHz Signal Input……………1000MSPS, 14bits LVDS Spur Free Dynamic Range…...75dBc @126MHz Clock Input Drive.. 0 to +13dBm, 25Ω differential Full Scale Output……..…-2dBm, 50Ω differential Voltage Reference……...2.5V Bandgap On-Chip Power Dissipation …..……………………….1.8W Technology ……………….0.5 µm SiGe BiCMOS Packaging......96 ball, Pb-free, Cavity-down BGA Description As shown in the functional block diagram below, the TC2411 features a 5-Bit Unary + 9-Bit Binary R2R architecture. 14-bit straight binary data can be input to the DAC at a sample rate of up to 1 GSPS. The DAC provides low-noise and low-spurious performance with digital IF input signals across the first Nyquist band. The highly linear analog output produced by the TC2411 may be filtered externally to reject the signal image, and is suitable for single-stage upconversion applications. Ordering Information PART NUMBER TC2411-IB TC2411-KIT TEMP RANGE (°C) -40°C to +85°C +25C PACKAGE 96 ball Pb-free BGA CLOCK SPEED 1000 MHz Evaluation Kit 5 Digital Input Clock In 2.5V Ref Out 2.5V Ref In 14 Buffer + Register 5 MSB Decode 31 Register 31 Unary 9 Analog Output R-2R Ladder Buf 9 Binary Amp Band Gap Amp Ref Cell Figure 1: TC2411 Functional Block Diagram 1 Copyright 2004 TelASIC Communications, Inc. All rights reserved. www.telasic.com Tel: 310.955.3838. Specifications subject to change without notice. Datasheet (Advance Information) TC2411 Absolute Maximum Ratings (Electrical performance is not guaranteed at absolute maximum ratings. Exposure to absolute maximum ratings for an extended period of time may impair the useful life of the product) Parameter Max Unit Electrical +5.0V Supply Voltage AVCC, DVDD +5.5 V +3.3V Supply Voltage DVCC +3.6 V -5.0V Supply Voltage AVEE, DVEE -5.5 V Clock Input Voltage +4.0 Vpp Environmental Operating Temp Range Storage Temp Range Maximum Junction Temperature Reflow Soldering Peak Temperature -40 to +85 -65 to +150 +110 +260 o o C C o C o C TC2411 Electrical Specifications (AVEE, DVEE = -5V; AVCC, DVDD = +5V; DVCC = +3.3V; IOUT = 20 mA, -40oC to +85°C ambient, unless otherwise noted) DC SPECIFICATIONS CONDITION MIN TYP MAX UNITS Supply Voltages AVCC, DVDD DVCC AVEE DVEE Normal Mode AVCC + DVDD + DVCC Current AVEE + DVEE Current Power Consumption Reference Voltage info Reference Output Load Regulation Resolution Standby Mode AVCC + DVDD + DVCC Current AVEE + DVEE Current Power Consumption 40 140 850 mA mA mW Vout_REF 0 < Isource < Imax 14 30 330 1.8 2.5 mA mA W V mV Bits 4.75 3.13 -5.25 -5.25 5.0 3.3 -5.0 -5.0 5.25 3.46 -4.75 -4.75 V V V V 2 MKDSTC2411 Rev- Datasheet (Advance Information) TC2411 TC2411 Electrical Specifications continued DIGITAL SPECIFICATIONS (AVEE, DVEE = -5V; AVCC, DVDD = +5V; DVCC = +3.3V; IOUT = 20 mA, -40oC to +85°C ambient, unless otherwise noted) CONDITION MIN TYP MAX UNITS Logic Inputs (N1- N14, P1 – P14) Compatibility Input Impedance Common Mode Voltage (VCM) Differential Input High Level Differential Input Low Level Data Coding Switching characteristics Setup Time Hold Time Propagation Delay Time Data Rise Time Data Fall Time Reset (RST) High Level Low Level Pulse Width Pulse Repetition Rate Propagation Delay Standby Mode (SLP, SLN) Single Ended Drive Low Level High Level 0 3.3 1.0 1.4 Volts Volts Volts Volts 2.5 DC 3 200 3.3 0 Volts Volts ns MHz Clock cycles 10% to 90 % 90% to 10 % 130 440 400 220 230 ps ps ps ps ps VCM = +1.2V VCM = +1.2V Binary -100 LVDS 100 +1.2 +100 ohms V mV mV Differential drive (External100Ω) Low Level High Level ANALOG SPECIFICATIONS CONDITION MIN TYP MAX UNITS DAC Clock (CLKP, CLKN) Maximum Conversion Rate Differential Input Voltage Common-mode Input Voltage Differential Input Resistance Analog Output (VOP, VON) Full Scale Output Voltage Differential Output Resistance 20 mA Differential Output Current 0.480 50 Vp-p ohms Guaranteed 1000 1.5 -3.1 25 MSPS Vpp V ohms 3 MKDSTC2411 Rev- Datasheet (Advance Information) TC2411 DYNAMIC SPECIFICATIONS CONDITION MIN TYP MAX UNITS DAC Output vs Frequency @ -0.5 dBFS fout = 33 MHz fout = 126 MHz fout = 251 MHz fout = 376 MHz fout = 490 MHz Noise Spectral Density @ -0.5 dBFS fout = 33 MHz fout = 126 MHz fout = 251 MHz fout = 376 MHz fout = 490 MHz SFDR vs Frequency @ -0.5 dBFS fout = 33 MHz fout = 126 MHz fout = 251 MHz fout = 376 MHz fout = 490 MHz IMD IF = 135 MHz, 145 MHz IF = 110 MHz, 120 MHz, 130 MHz, 140 MHz ACPR (EDGE) IF = 260 MHz IF = 230 MHz, 240 MHz, 260 MHz, 270 MHz ACPR (WCDMA) IF = 260 MHz IF = 230 MHz, 240 MHz, 260 MHz, 270 MHz Analog Output Response Output Settling Time Output Rise Time (10 - 90%) Output Fall Time (90 – 10%) Glitch Energy -FS to +FS transition +FS to -FS transition -MS to +MS transition +MS to -MS transition MS = Mid-Scale FS = Full-Scale 0.5 0.1 0.4 0.2 ps-V ps-V ps-V ps-V 220 230 pS pS pS 1 Tone @ -10.5 dBFS 4 Tones @ -17.5 dBFS -75 -76 dBc dBc 1 Tone @ -3.5 dBFS 4 Tones @ -15.5 dBFS -95 -88 dBc dBc 2 Tones @ -6.5 dBFS 4 Tones @ -12.5 dBFS -82 -82 dBc dBc -78 -75 -70 -65 -60 dBc dBc dBc dBc dBc -166 -164 -161 -161 -160 dBm/Hz dBm/Hz dBm/Hz dBm/Hz dBm/Hz -3 -3 -5 -8 -9 dBm dBm dBm dBm dBm 4 MKDSTC2411 Rev- Datasheet (Advance Information) TC2411 TC2411 Thermal Characteristics Normal Mode of Operation Package 19X19 Cavity-down BGA 96L θJC (oC/W) 2.72 θJA (oC/W) 0 m/s 20.2 2m/s 18.5 3m/s 17.5 Note Results based on FEA simulation without heat sink. • • • • • • The DC power of the TC2411 is 1.8 W in normal mode of operation Maximum Junction Temperature is not to exceed 110oC. There is no need for an external heat sink if maximum ambient temperature is +70oC. An external heat sink is recommended for ambient temperatures in excess of +70oC to insure that the junction temperature does not exceed 110oC maximum. Use of standby mode reduces the average power dissipation proportional to the normal mode / standby mode duty cycle and allows a higher ambient temperature before a heat sink must be used to insure that the junction temperature does not exceed 110oC maximum. In the above table, θJA is presented according to JEDEC JESD 51-2 (natural convection) and 51-6 (forced convection). Thermal simulation assumes the package is mounted on the test board specified by JEDEC JESD51-9 (101.6X114.3X1.6 mm, four layers). Note: θJC: Thermal resistance from junction to case. θJA: Thermal resistance from junction to ambient. Figure 2: Standby Mode Operational Truth Table Control Signal STDBY_P STDBY_N Normal Mode L H Standby Mode H L Figure 3: Standby/Normal Mode Timing STDBY_P Standby Mode STDBY_N Normal Mode Standby Mode