KM4212IC8

August 2001 KM4212 Dual, 70µA, Low Cost, +2.7V and +5V, 7.3MHz Rail-to-Rail Amplifier Product Brief SOIC-8 shown (not actual size). MSOP-8 package also available. Outperforms the competition in single-supply applications at a lower cost! Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 70µA supply current per amplifier 7.3MHz bandwidth Fully specified at +2.7V and +5V supplies Output voltage range: 0.04V to 4.96V; Vs = +5 Input voltage range: -0.3V to +3.8V; Vs = +5 9V/µs slew rate ±4mA linear output current ±9mA output short circuit current 29nV/√Hz input voltage noise Competes with low power CMOS amplifiers Package options (SOIC-8 and MSOP-8) Applications ■ ■ ■ ■ ■ Portable/battery-powered applications A/D buffer Active filters Signal conditioning Portable test instruments General Description The KM4212 is a dual, ultra-low power, low cost, voltage feedback amplifier. The KM4212 uses only 70µA of supply current per amplifer, and is designed to operate on +2.7V, +5V, or ±2.5V supplies. The input voltage range extends 300mV below the negative rail and 1.2V below the positive rail. The KM4212 offers high bipolar performance at a low CMOS price. The KM4212 offers superior dynamic performance with a 7.3MHz small signal bandwidth and 9V/µs slew rate. The combination of low power, high bandwidth, and rail-to-rail performance make the KM4212 well suited for battery-powered communication/computing systems. Advertised KM4212 Specifications G = 1 BW 7.3 Noise 29 Slew rate 9 Supply current/amp 70 Typical CMOS Amplifier 1 30 1 50 Units MHz nV/√Hz V/µs µA Typical Performance Plot Non-Inverting Freq. Response Vs = +5V Normalized Magnitude (2dB/div) ■ G=2 Rf = 10kΩ 0.01 0.1 1 10 Frequency (MHz) Ordering Information Part No. Package KM4212IC8 SOIC-8 KM4212IC8TR3 SOIC-8 KM4212IM8 MSOP-8 KM4212IM8TR3 MSOP-8 Container Rail Reel Rail Reel Pack Qty 95 2500 50 4000 Eval Bd* KEB006 KEB006 KEB010 KEB010 Temperature range for all parts: -40°C to +85°C. * Evaluation boards are available to aid in the evaluation of these products. See the full data sheet or website for complete information. The KM4112 single amplifier is also available. © 2001 Fairchild Semiconductor International Patents Pending www.fairchildsemi.com KM4212 Typical Specifications Electrical Characteristics Available Packages (G = +2, Rf = 10kΩ, RL = 10kΩ to Vs/2, Ta = +25°C, unless noted) PARAMETERS Frequency Domain Response -3dB bandwidth1 full power bandwidth gain bandwidth product Time Domain Response rise and fall time settling time to 0.1%2 overshoot2 slew rate Distortion and Noise Response 2nd harmonic distortion2 3rd harmonic distortion2 THD2 input voltage noise crosstalk DC Performance input offset voltage average drift input bias current average drift input offset current power supply rejection ratio open loop gain quiescent current per amplifier CONDITIONS TYP TYP Vs = +2.7V Vs = +5V G = +1, Vo = 0.05Vpp G = +2, Vo < 0.2Vpp G = -1, Vo = 2Vpp 6.5 3 2 3.5 7.3 3.4 2.5 4 MHz MHz MHz MHz 0.2V step 2V step 2V step 2V step, G = -1 55 700 7 7 50 600 4 9 ns ns % V/µs linear output current short circuit output current power supply operating range Out1 1 -In1 2 +In1 3 -Vs + + 4 8 +Vs 7 Out2 6 -In2 5 +In2 MSOP-8 2Vpp, 100kHz 2Vpp, 100kHz 2Vpp, 100kHz >10kHz 0.01MHz DC 68 65 63 30 89 67 60 59 29 89 dBc dBc dB nV/Hz dB 1 3 90 100 2.1 63 82 62 1 8 90 100 1.3 63 76 70 mV µV/°C µA nA/°C nA dB dB µA Input Characteristics input resistance >10 >10 input capacitance 1.4 1.25 input common mode voltage range -0.3 to 1.5 -0.3 to 3.8 common mode rejection ratio DC, Vcm = 0V to Vs – 1.5 95 97 Output Characteristics output voltage swing SOIC-8 UNITS MΩ pF V dB Out1 1 8 +Vs -In1 2 7 Out2 +In1 3 6 -In2 5 +In2 -Vs 0.035 to 2.665 0.04 to 4.96 0.07 to 2.6 0.09 to 4.9 ±4 ±4 ±9 ±9 2.7 to 5 V V mA mA V + 4 Typical Circuit Configuration +Vs 6.8µF + +In1 + 0.01µF Out1 1/2 KM4212 RL = 10kΩ to Vs/2 RL = 2kΩ to Vs/2 + Rf Rg Notes: 1) For +2.7V supply, a 1Vpp condition was used. 2) For G = +1, Rf = 0. Absolute Maximum Ratings supply voltage maximum junction temperature storage temperature range lead temperature (10 sec) operating temperature range input voltage range internal power disapation θja for 8 lead SOIC θja for 8 lead MSOP 0 to +6V +175°C -65°C to +150°C +260°C -40° to +85°C ±Vs + 0.5V; -Vs – 0.5V; see power derating curves in the full data sheet 152°C/W 206°C/W LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. Lit No. XXXXXX-XXX