AD822BR-REEL7

AD822BR-REEL7 FEATURES

True single-supply operationOutput swings rail-to-railInput voltage range extends below groundSingle-supply capability from 5 V to 30 VDual-supply capability from ±2.5 V to ±15 VHigh load driveCapacitive load drive of 350 pF, G = +1Minimum output current of 15 mAExcellent ac performance for low power800 µA maximum quiescent current per amplifierUnity-gain bandwidth: 1.8 MHzSlew rate of 3 V/μsGood dc performance800 µV maximum input offset voltage2 µV/°C typical offset voltage drift25 pA maximum input bias currentLow noise13 nV/√Hz at 10 kHzNo phase inversion

AD822BR-REEL7 GENERAL DESCRIPTION

The AD822 is a dual precision, low power FET input op ampthat can operate from a single supply of 5 V to 30 V or fromdual supplies of ±2.5 V to ±15 V. It has true single-supply capabilitywith an input voltage range extending below the negative rail,allowing the AD822 to accommodate input signals below groundwhile in the single-supply mode. Output voltage swing extendsto within 10 mV of each rail, providing the maximum outputdynamic range.Offset voltage of 800 µV maximum, offset voltage drift of 2 µV/°C,input bias currents below 25 pA, and low input voltage noiseprovide dc precision with source impedances up to a gigaohm.The 1.8 MHz unity-gain bandwidth, –93 dB total harmonicdistortion (THD) at 10 kHz, and 3 V/µs slew rate are providedwith a low supply current of 800 µA per amplifier.FREQUENCY (Hz)11010k1k100INPUT VOLTAGE NOISE (nV/√Hz)1001000874-002Figure 2. Input Voltage Noise vs. Frequency

AD822BR-REEL7 APPLICATIONS

Battery-powered precision instrumentationPhotodiode preampsActive filters12-bit to 14-bit data acquisition systemsMedical instrumentationLow power references and regulators