AD822ARZ Description

The AD822 is a dual precision, low power FET input op amp that can operate from a single supply of 5 V to 30 V or from dual supplies of ±2.5 V to ±15 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 while in the single-supply mode. Output voltage swing extends to within 10 mV of each rail, providing the maximum output dynamic range.
Offset voltage of 800 μV maximum, offset voltage drift of 2 μV/°C, input bias currents below 25 pA, and low input voltage noise provide dc precision with source impedances up to a gigaohm. The 1.8 MHz unity-gain bandwidth, –93 dB total harmonic distortion (THD) at 10 kHz, and 3 V/μs slew rate are provided with a low supply current of 800 μA per amplifier.
AD822ARZ Features

● True single-supply operation
◆ Output swings rail-to-rail
◆ Input voltage range extends below ground
◆ Single-supply capability from 5 V to 30 V
◆ Dual-supply capability from ±2.5 V to ±15 V
● High load drive
◆ Capacitive load drive of 350 pF, G = +1
◆ Minimum 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 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 at 10 kHz
◆ No phase inversion
AD822ARZ Applications

● Battery-powered precision instrumentation
● Photodiode preamps
● Active filters
● 12-bit to 14-bit data acquisition systems
● Medical instrumentation
● Low power references and regulators