The AD822 is a dual precision, low power FET input op ampthat can operate from a single supply of 3 V to 36 V or dual supplies of ±1.5 V to ±18 V. It has true single-supply capabilitywith an input voltage range extending below the negative rail,allowing the AD822 to accommodate input signals belowground in the single-supply mode. Output voltage swing extends to within 10 mV of each rail, providing the maximumoutput dynamic range.