The AD8293G80/AD8293G160 are small, low cost, precisioninstrumentation amplifiers that have low noise and rail-to-railoutputs. 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-polefilter. The AD8293G80/AD8293G160 also feature low offsetvoltage, offset drift, and gain drift coupled with high common moderejection. They are capable of operating on a supply of1.8 V to 5.5 V.

With a low offset voltage of 20 μV (AD8293G160B), an offsetvoltage drift of 0.3 μV/°C, and a voltage noise of only 0.7 μV p-p(0.01 Hz to 10 Hz), the AD8293G80/AD8293G160 are idealfor applications where error sources cannot be tolerated.

Precision instrumentation, position and pressure sensors,medical instrumentation, and strain gauge amplifiers benefitfrom the low noise, low input bias current, and high common moderejection. The small footprint and low cost are ideal forhigh volume applications.The small package and low power consumption allow themaximum channel density and the minimum board sizerequired for portable systems. Designed for ease of use, theseinstrumentation amplifiers, unlike more traditional ones, have abuffered reference, eliminating the need for an additional op ampto set the reference voltage to midsupply.

The AD8293G80/AD8293G160 are specified over the industrialtemperature range from −40°C to +85°C. The AD8293G80/AD8293G160 are available in a halogen-free, Pb-free, 8-lead SOT-23.

Applications

Current sensing

Strain gauges

Laser diode control loops

Portable medical instruments

Thermocouple amplifiers

Data Sheet, Rev. 0, 07/08

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.