INA321

INA321 INA2321 SBOS168D − DECEMBER 2000 − REVISED JANUARY 2006 microPower, Single-Supply, CMOS Instrumentation Amplifier FEATURES D LOW QUIESCENT CURRENT: 40µA/channel Shut Down: < 1µA D HIGH GAIN ACCURACY: G = 5, 0.02%, 2ppm/°C D GAIN SET WITH EXTERNAL RESISTORS D LOW OFFSET VOLTAGE: ±200µV D HIGH CMRR: 94dB D LOW BIAS CURRENT: 10pA D BANDWIDTH: 500kHz, G = 5V/V D RAIL-TO-RAIL OUTPUT SWING: (V+) − 0.02V D WIDE TEMPERATURE RANGE: −55°C to +125°C D SINGLE VERSION IN MSOP-8 PACKAGE AND DUAL VERSION IN TSSOP-14 PACKAGE DESCRIPTION The INA321 family is a series of rail-to-rail output, micropower CMOS instrumentation amplifiers that offer wide-range, single-supply, as well as bipolar-supply operation. The INA321 family provides low-cost, low-noise amplification of differential signals with micropower current consumption of 40µA. When shutdown, the INA321 has a quiescent current of less than 1µA. Returning to normal operations within microseconds, the shutdown feature makes the INA321 optimal for low-power battery or multiplexing applications. Configured internally for 5V/V gain, the INA321 offers exceptional flexibility with user-programmable external gain resistors. The INA321 reduces common-mode error over frequency and with CMRR remaining high up to 3kHz, line noise and line harmonics are rejected. The low-power design does not compromise on bandwidth or slew rate, making the INA321 ideal for driving sample Analog-to-Digital (A/D) converters as well as general-purpose applica...