AD823ARZ

The AD823 is a dual precision, 16 MHz, JFET input op amp that can operate from a single supply of 3.0 V to 36 V or from dual supplies of ±1.5 V to ±18 V. It has true single- supply capability with an input voltage range extending below ground in single- supply mode. Output voltage swing extends to within 50 mV of each rail for Iout ≤ 100 μA, providing outstanding output dynamic range. An offset voltage of 800μV maximum, an offset voltage drift of 2μV/℃, input bias currents below 25pA and low input voltage noise provide dc precision with source impedances up to a Gigaohm. It provides 16MHz - 3 dB bandwidth, - 108 dB THD @20kHz and a 22V/μs slew rate with a low supply current of 2.6mA per amplifier. The AD823 drives up to 500 pF of direct capacitive load as a follower and provides an output current of 15mA 0.5V from the supply rails. This allows the amplifier to handle a wide range of load conditions.

Applications

• Battery- powered precision instrumentation
• Photodiode preamps
• Active filters
• 12- bit to 16- bit data acquisition systems
• Medical instrumentation

Key features

• Single- supply operation
• Output swings rail- to- rail
• Input voltage range extends below ground
• Single- supply capability from 3 V to 36 V
• High load drive
• Capacitive load drive of 500 pF, G = +1
• Output current of 15 mA, 0.5 V from supplies
• Excellent ac performance on 2.6 mA/amplifier
• - 3 dB bandwidth of 16 MHz, G = +1
• 350 ns settling time to 0.01% (2 V step)
• Slew rate of 22 V/μs
• Good dc performance
• 800 μV maximum input offset voltage
• 2 μV/℃ offset voltage drift
• 25 pA maximum input bias current
• Low distortion: - 108 dBc worst harmonic @ 20 kHz
• Low noise: 16 nV/√Hz @ 10 kHz
• No phase inversion with inputs to the supply rails