| GENERAL DESCRIPTION The AD822 is a dual precision, low power FET input op amp that can operate from a single supply of 3.0 V to 36 V or dual supplies of ±1.5 V to ±18 V. It has true single-supply capability with an input voltage range extending below the negative rail, allowing the AD822 to accommodate input signals below ground in the single-supply mode. Output voltage swing extends to within 10 mV of each rail, providing the maximum output dynamic range. FEATURES True single-supply operation Output swings rail-to-rail Input voltage range extends below ground Single-supply capability from 3 V to 36 V Dual-supply capability from ±1.5 V to ±18 V High load drive Capacitive load drive of 350 pF, G = +1 Mini-mum output current of 15 mA Excellent ac performance for low power 800 μA maximum quiescent current per amplifier Unity gain bandwidth: 1.8 MHz Slew rate of 3.0 V/μs Good dc performance 800 μV maximum input offset voltage 2 μV/°C typical offset voltage drift 25 pA maximum input bias current Low noise 13 nV/√Hz @ 10 kHz No phase inversion APPLICATIONS Battery-powered precision instrumentation Photodiode preamps Active filters 12-bit to 14-bit data acquisition systems Medical instrumentation Low power references and regulators |
