GENERAL DESCRIPTION
The AD627 is an integrated, micropower instrumentation amplifier that delivers rail-to-rail output swing on single and dual (+2.2 V to ±18 V) supplies. The AD627 provides excellent ac and dc specifications while operating at only 85 μA maximum.

FEATURES
   Micropower, 85 μA maximum supply current
   Wide power supply range (+2.2 V to ±18 V)
   Easy to use
      Gain set with one external resistor
      Gain range 5 (no resistor) to 1000
   Higher performance than discrete designs
   Rail-to-rail output swing
   High accuracy dc performance
      0.03% typical gain accuracy (G = +5) (AD627A)
      10 ppm/°C typical gain drift (G = +5)
      125 μV maximum input offset voltage (AD627B dual supply)
      200 μV maximum input offset voltage (AD627A dual supply)
      1 μV/°C maximum input offset voltage drift (AD627B)
      3 μV/°C maximum input offset voltage drift (AD627A)
      10 nA maximum input bias current
   Noise: 38 nV/√Hz RTI noise at 1 kHz (G = +100)
   Excellent ac specifications
      AD627A: 77 dB minimum CMRR (G = +5)
      AD627B: 83 dB minimum CMRR (G = +5)
      80 kHz bandwidth (G = +5)
      135 μs settling time to 0.01% (G = +5, 5 V step)

APPLICATIONS
   4 mA to 20 mA loop-powered applications
   Low power medical instrumentation—ECG, EEG
   Transducer interfacing
   Thermocouple amplifiers
   Industrial process controls
   Low power data acquisition
   Portable battery-powered instruments