AD820ARZ Low Input Bias Current Op Amps (≤100 pA) by Analog Devices

Status: Production
Series: AD820
RoHS: Compliant
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The AD820 is a precision, low power FET input op amp that can operate from a single supply of 5 V to 36 V, or dual supplies of ±2.5 V to ±18 V. It has true single-supply capability, with an input voltage range extending below the negative rail, allowing the AD820 to accommodate input signals below ground 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, typical input bias currents below 25 pA, and low input voltage noise provide dc precision with source impedances up to 1 GΩ. 1.8 MHz unity gain bandwidth, −93 dB THD at 10 kHz, and 3 V/μs slew rate are provided for a low supply current of 800 μA. The AD820 drives up to 350 pF of direct capacitive load and provides a minimum output current of 15 mA. 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 the single-supply user.The AD820 is available in two performance grades. The A and B grades are rated over the industrial temperature range of −40°C to +85°C. The AD820 is offered in three 8-lead package options: plastic DIP (PDIP), surface mount (SOIC) and (MSOP).
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Logo for Arrow Electronics Arrow Electronics
6,287 units
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1,458 units
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565 units
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565 units
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565 units
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True single-supply operation
Output swings rail-to-rail
Input voltage range extends below ground
Single-supply capability from 5 V to 36 V
Dual-supply capability from ±2.5 V to ±18 V 
Excellent load drive
Capacitive load drive up to 350 pF
Minimum output current of 15 mA 
Excellent ac performance for low power
800 μA maximum quiescent current
Unity-gain bandwidth: 1.8 MHz
Slew rate of 3 V/μs 
Excellent 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 @ 10 kHz 

Alternative Descriptions

Op-Amp R-to-R FET-Inp SO8 | Schukat Electronic
OPAMP, NSOIC-8, 1.8 MHZ, -40 TO 85DEG C | element14
Operational Amplifier, Single, 1.9 Mhz, 1, 3 V/ S, 5V To 36V, Soic, 8 Rohs Compliant: Yes |Analog Devices AD820ARZ | Newark Electronics
Analog Devices Operational Amplifier, Single, 1.8 MHz, SOIC-8N | Distrelec
NON ROHS / CI / TUBE 4 PCS | Holdelec
FET INPT, SINGLE SPL Y AMP | Mouser Electronics

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Frequently Asked Questions

Where can I find additional details, specifications and documents for a AD820ARZ?

Additional datasheets, footprints and schematics for AD820ARZ are listed on our Part Details page. You can also find images and similar parts to AD820ARZ on this page.

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What category does AD820ARZ fall under?

The AD820ARZ is listed under Low Input Bias Current Op Amps (≤100 pA).

Can I view similar or alternative parts?

You can view similar parts to AD820ARZ when available in the Low Input Bias Current Op Amps (≤100 pA) range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the AD820ARZ you can contact the distributor directly for product support, shipping queries etc.

Is the AD820ARZ RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

Which authorised distributors for AD820ARZ have stock available?

Authorised distributors including Arrow Electronics, Analog Devices, element14, Farnell and Newark Electronics have stock available or on a lead time for AD820ARZ.

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