AD823ARZ-R7
双通道， 16 MHz的轨到轨FET输入放大器 Dual, 16 MHz, Rail-to-Rail FET Input Amplifier
Product Details
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 I
OUT ≤ 100 μA, providing outstanding output dynamic range.
An offset voltage of 800 μV maximum, an 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. It provides 16 MHz, −3 dB bandwidth, −108 dB THD @ 20 kHz, and a 22 V/μs slew rate with a low supply current of 2.6 mA per amplifier. The AD823 drives up to 500 pF of direct capacitive load as a follower and provides an output current of 15 mA, 0.5 V from the supply rails. This allows the amplifier to 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 A/D drivers, high speed active filters, and other low voltage, high dynamic range systems.
The AD823 is available over the industrial temperature range of −40°C to +85°C and is offered in both 8-lead PDIP and 8-lead SOIC packages.
**Applications**
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- Battery-powered precision instrumentation
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- Photodiode preamps
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- Active filters
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- 12-bit to 16-bit data acquisition systems
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- Medical instrumentation
### Features and Benefits
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- Single-supply operation
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- Output swings rail-to-rail
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- Input voltage range extends below ground
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- Single-supply capability from 3 V to 36 V
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- High load drive
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- Capacitive load drive of 500 pF, G = +1
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- Output current of 15 mA, 0.5 V from supplies
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- Excellent ac performance on 2.6 mA/amplifier
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- −3 dB bandwidth of 16 MHz, G = +1
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- 350 ns settling time to 0.01% 2 V step
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- Slew rate of 22 V/μs
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- Good dc performance
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- 800 μV maximum input offset voltage
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- 2 μV/°C offset voltage drift
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- 25 pA maximum input bias current
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- Low distortion: −108 dBc worst harmonic @ 20 kHz
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- Low noise: 16 nV/√Hz @ 10 kHz
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- No phase inversion with inputs to the supply rails
