GENERAL DESCRIPTION
The AD8557 is a zero drift, sensor signal amplifier with digitally programmable gain and output offset. Designed to easily and accurately convert variable pressure sensor and strain bridge outputs to a well-defined output voltage range, the AD8557 accurately amplifies many other differential or single-ended sensor outputs. The AD8557 uses the Analog Devices, Inc., proprietary low noise auto-zero and DigiTrim® technologies to create an accurate and flexible signal processing solution in a compact footprint.

FEATURES
   Very low offset voltage: 12 μV maximum over temperature
   Very low input offset voltage drift: 65 nV/°C maximum
   High CMRR: 96 dB minimum
   Digitally programmable gain and output offset voltage
   Gain range from 28 to 1300
   Qualified for automotive applications
   Single-wire serial interface
   Stable with any capacitive load
   SOIC and LFCSP packages
   2.7 V to 5.5 V operation

APPLICATIONS
   Automotive sensors
   Pressure and position sensors
   Precision current sensing
   Thermocouple amplifiers
   Industrial weigh scales
   Strain gages