INA321EA/2K5

CMOS仪表放大器

DESCRIPON

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 nanoseconds, 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.

FEATURES

LOW QUIESCENT CURRENT: 40µA/channel Shut Down: < 1µA

HIGH GAIN ACCURACY: G = 5, 0.02%, 2ppm/°C

GAIN SET WITH EXTERNAL RESISTORS

LOW OFFSET VOLTAGE: ±200µV

HIGH CMRR: 94dB

LOW BIAS CURRENT: 10pA

BANDWIDTH: 500kHz, G = 5V/V

RAIL-TO-RAIL OUTPUT SWING: V+ − 0.02V

WIDE TEMPERATURE RANGE: −55°C to +125°C

SINGLE VERSION IN MSOP-8 PACKAGE AND DUAL VERSION IN TSSOP-14 PACKAGE

APPLICATIONS

INDUSTRIAL SENSOR AMPLIFIERS: Bridge, RTD, Thermistor, Position

PHYSIOLOGICAL AMPLIFIERS: ECG, EEG, EMG

A/D CONVERTER SIGNAL CONDITIONING

DIFFERENTIAL LINE RECEIVERS WITH GAIN

FIELD UTILITY METERS

PCMCIA CARDS

COMMUNICATION SYSTEMS

TEST EQUIPMENT

AUTOMOTIVE INSTRUMENTATION