GENERAL DESCRIPTION
The AD629 is a difference amplifier with a very high input common-mode voltage range. It is a precision device that allows the user to accurately measure differential signals in the presence of high common-mode voltages up to ±270 V.

FEATURES
   Improved Replacement for:
      INA117P and INA117KU
   ±270 V Common-Mode Voltage Range
   Input Protection to:
      ±500 V Common Mode
      ±500 V Differential
   Wide Power Supply Range (±2.5 V to ±18 V)
   ±10 V Output Swing on ±12 V Supply
   1 mA Max Power Supply Current

   HIGH ACCURACY DC PERFORMANCE
   3 ppm Max Gain Nonlinearity
   20 μV/°C Max Offset Drift (AD629A)
   10 μV/°C Max Offset Drift (AD629B)
   10 ppm/°C Max Gain Drift

   EXCELLENT AC SPECIFICATIONS
   77 dB Min CMRR @ 500 Hz (AD629A)
   86 dB Min CMRR @ 500 Hz (AD629B)
   500 kHz Bandwidth

APPLICATIONS
   High Voltage Current Sensing
   Battery Cell Voltage Monitor
   Power Supply Current Monitor
   Motor Control
   Isolation