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AD823A

AD823A Series

16 MHz, Rail-to-Rail FET Input Dual Amplifier

Manufacturer: Analog Devices

Catalog

16 MHz, Rail-to-Rail FET Input Dual Amplifier

Key Features

• Single-supply operationOutput swings rail-to-railInput voltage range extends below groundSingle-supply capability from 3 V to 36 V
• Output swings rail-to-rail
• Input voltage range extends below ground
• Single-supply capability from 3 V to 36 V
• High load driveCapacitive load drive of 500 pF, G = +1Output current of 15 mA, 0.5 V from supplies
• 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 = +1350 ns settling time to 0.01% (2 V step)Slew rate of 22 V/μs
• −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 performance800 μV maximum input offset voltage2 μV/°C offset voltage drift25 pA maximum input bias current
• 800 μV maximum input offset voltage
• 2 μV/°C 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

Description

AI
The AD823A is a dual precision, 17 MHz, JFET input op amp manufactured in the extra fast complementary bipolar (XFCB) process. The AD823A can operate from a single supply of 3 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 20 mV of each rail for IOUT ≤ 100 μA, providing outstanding output dynamic range. It also has a linear output current of 40 mA, 0.5 V from the supply rails.An offset voltage of 700 μV maximum, an offset voltage drift of 1 μV/°C, and typical input bias currents of 0.3 pA provide dc precision with source impedances up to 1 GΩ. The AD823A provides 17 MHz, −3 dB bandwidth, and a 30 V/μs slew rate with a low supply current of only 2.6 mA per amplifier. It also provides low input voltage noise of 14 nV/√Hzand −108 dB SFDR at 20 kHz. The AD823A has low input capacitances (0.6 pF differential and 1.3 pF common mode) and drives more than 500 pF of direct capacitive load as a follower. This lets the amplifier handle a wide range of load conditions.This combination of ac and dc performance, plus the outstanding load drive capability, results in an exceptionally versatile amplifier for applications such as ADC drivers, high speed active filters, and other low voltage, high dynamic range systems.The AD823A is available over the industrial temperature range of −40°C to +85°C and is offered in an 8-lead SOIC package and an 8-lead MSOP package.APPLICATIONSBattery-powered precision instrumentationPhotodiode preampsActive filters12-bit to 16-bit data acquisition systemsMedical instrumentation