GENERAL DESCRIPTION
This new family of amplifiers has ultralow offset, drift and bias current. The AD8571, AD8572 and AD8574 are single, dual and quad amplifiers featuring rail-to-rail input and output swings. All are guaranteed to operate from 2.7 V to 5 V single supply.
The AD857x family provides the benefits previously found only in expensive autozeroing or chopper-stabilized amplifiers. Using Analog Devices’ new topology these new zero-drift amplifiers combine low cost with high accuracy. (No external capacitors are required.) In addition, using a patented spread-spectrum autozero technique, the AD857x family virtually eliminates the intermodulation effects from interaction of the chopping function with the signal frequency in ac applications.

FEATURES
   Low Offset Voltage: 1 mV
   Input Offset Drift: 0.005 mV/8C
   Rail-to-Rail Input and Output Swing
   5 V/2.7 V Single-Supply Operation
   High Gain, CMRR, PSRR: 130 dB
   Ultralow Input Bias Current: 20 pA
   Low Supply Current: 750 mA/Op Amp
   Overload Recovery Time: 50 ms
   No External Capacitors Required
  
APPLICATIONS
   Temperature Sensors
   Pressure Sensors
   Precision Current Sensing
   Strain Gage Amplifiers
   Medical Instrumentation
   Thermocouple Amplifiers