GENERAL DESCRIPTION

The AD8293G80/AD8293G160 are small, low cost, precision instrumentation amplifiers that have low noise and rail-to-rail outputs. They are available in two fixed-gain models: 80 and 160. They incorporate the gain setting resistors and filter resistors, reducing the number of ancillary components. For example, only two external capacitors are needed to implement a 2-pole filter. The AD8293G80/AD8293G160 also feature low offset voltage, offset drift, and gain drift coupled with high common mode rejection. They are capable of operating on a supply of 1.8 V to 5.5 V.

FEATURES

Small package: 8-lead SOT-23

Reduced component count

Incorporates gain resistors and filter resistors

Low offset voltage: 20 μV maximum

Low offset drift: 0.3 μV/°C maximum

Low gain drift: 25 ppm/°C maximum

High CMR: 140 dB typical

Low noise: 0.7 μV p-p from 0.01 Hz to 10 Hz

Single-supply operation: 1.8 V to 5.5 V

Rail-to-rail output

Available in 2 fixed-gain models

APPLICATIONS

Current sensing

Strain gauges

Laser diode control loops

Portable medical instruments

Thermocouple amplifiers

VCC= 5.0 V, VCM= −0 V, VREF= 3.3 V, VIN= VINP− VINN, TA= 25°C, tested at ADC OUT, unless otherwise noted. Temperature specifications guaranteed by characterization.