GENERAL DESCRIPTION
The AD8222 is a dual-channel, high performance instrumentation amplifier that requires only one external resistor per amplifier to set gains of 1 to 10,000.
The AD8222 is the first dual-instrumentation amplifier in the small 4 mm × 4mm LFCSP. It requires the same board area as a typical single instrumentation amplifier. The smaller package allows a 2× increase in channel density and a lower cost per channel, all with no compromise in performance.

FEATURES
   Two channels in small 4 mm × 4 mm LFCSP
   Gain set with 1 resistor per amplifier (G = 1 to 10,000)
   Low noise
      8 nV/√Hz at 1 kHz
      0.25 µV p-p (0.1 Hz to 10 Hz)
   High accuracy dc performance (B grade)
      60 µV maximum input offset voltage
      0.3 µV/°C maximum input offset drift
      1.0 nA maximum input bias current
      126 dB minimum CMRR (G = 100)
   Excellent ac performance
      140 kHz bandwidth (G = 100)
      13 µs settling time to 0.001%
   Differential output option (single channel)
      Fully specified
      Adjustable common-mode output
   Supply range: ±2.3 V to ±18 V

APPLICATIONS
   Multichannel data acquisition for
      ECG and medical instrumentation
      Industrial process controls
      Wheatstone bridge sensors
   Differential drives for
      High resolution input ADCs
      Remote sensors