GENERAL DESCRIPTION
The AD622 is a low cost, moderately accurate instrumentation amplifier that requires only one external resistor to set any gain between 2 and 1000. For a gain of 1, no external resistor is required. The AD622 is a complete difference or subtracter amplifier system that also provides superior linearity and common-mode rejection by incorporating precision laser-trimmed resistors.

FEATURES
    Easy to use
    Low cost solution
    Higher performance than two or three op amp design
    Unity gain with no external resistor
    Optional gains with one external resistor (Gain range: 2 to 1000)
    Wide power supply range: ±2.6 V to ±15 V
    Available in 8-lead PDIP and 8-lead SOIC_N packages
    Low power, 1.5 mA maximum supply current
    DC performance 0.15% gain accuracy: G = 1 125 μV maximum input offset voltage 1.0 μV/°C maximum input offset drift 5 nA maximum input bias current 66 dB minimum common-mode rejection ratio: G = 1
    Noise 12 nV/√Hz @ 1 kHz input voltage noise 0.60 μV p-p noise: 0.1 Hz to 10 Hz, G = 10
    AC characteristics 800 kHz bandwidth: G = 10 10 μs settling time to 0.1% @ G = 1 to 100 1.2 V/μs slew rate

APPLICATIONS
    Transducer interface
    Low cost thermocouple amplifier
    Industrial process controls
    Difference amplifier
    Low cost data acquisition