INA331

INA331 INA2331 ® INA331 INA2331 SBOS215C – DECEMBER 2001 – REVISED APRIL 2005 Low-Power, Single-Supply, CMOS INSTRUMENTATION AMPLIFIERS FEATURES q DESIGNED FOR LOW COST q HIGH GAIN ACCURACY: G = 5, 0.02%, 2ppm/°C q GAIN SET WITH EXT. RESISTORS FOR > 5V/V q LOW OFFSET VOLTAGE: ±250µV q HIGH CMRR: 94dB DC, 50dB at 45kHz q LOW BIAS CURRENT: 0.5pA q BANDWIDTH, SLEW RATE: 2.0MHz, 5V/µs q RAIL-TO-RAIL OUTPUT SWING: (V+) – 0.02V q WIDE TEMPERATURE RANGE: –55°C to +125°C q LOW QUIESCENT CURRENT: 490µA max/chan q SHUT DOWN: 0.01µA q MSOP-8 SINGLE AND TSSOP-14 DUAL PACKAGES APPLICATIONS q INDUSTRIAL SENSOR AMPLIFIERS: Bridge, RTD, Thermocouple, Position q PHYSIOLOGICAL AMPLIFIERS: ECG, EEG, EMG q A/D CONVERTER SIGNAL CONDITIONING q DIFFERENTIAL LINE RECEIVERS WITH GAIN q FIELD UTILITY METERS q PCMCIA CARDS q AUDIO AMPLIFIERS q COMMUNICATION SYSTEMS q TEST EQUIPMENT q AUTOMOTIVE INSTRUMENTATION DESCRIPTION The INA331 and INA2331 are rail-to-rail output, low-power CMOS instrumentation amplifiers that offer wide range, singlesupply operation as well as bipolar-supply operation. The INA331 family provides low-cost, low-noise amplification of differential signals with a low quiescent current of 415µA (dropping to 0.01µA when shutdown). Returning to normal operation within microseconds, this INA can be used for battery or multi-channel applications. Configured internally in a gain of 5V/V, the INA331 offers flexibility in higher gains by choosing external resistors. The INA331 rejects...