Low power instrumentation amplifier ics analog devices ad620anz the ad620anz is a low cost high accuracy instrumentation amplifier that requires only one external resistor to set gains of up to 10 000 packaged in a through hole dil 8 case this device has low power requirements making it suitable for battery powered portable or remote applications additional features such as high accuracy low offset voltage and low offset drift further demonstrate the suitability of this device for app