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Analog Devices AD820AR-3V — Logic ICs
Analog Devices

AD820AR-3V JFET Op-Amp, 1.9 MHz, Rail-to-Rail Output, 8-SOIC

MPNAD820AR-3V
End of Life

Analog Devices AD820AR-3V, single JFET op-amp, 1.9 MHz gain bandwidth, 3 V/µs slew rate, rail-to-rail output, 700 µA supply, 8-SOIC package, -40°C to 85°C.

$2.98Ref. price · indicative, final on quote
AD820AR-3V datasheet
Packaging8-SOIC (0.154", 3.90mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

AD820AR-3V Technical Specifications
ParameterValue
Output typeRail-to-Rail
Mounting typeSurface Mount
Amplifier typeJ-FET
Voltage - input offset400 µV
Voltage - supply span36 V
Current - supply700µA
Current - input bias2 pA
Current - output (Channel)20 mA
Operating temperature-40°C ~ 85°C
Gain bandwidth product1.9 MHz
PackageBulk
Slew rate3V/µs
Case8-SOIC (0.154\", 3.90mm Width)
Number of circuits1

Product details

What this JFET op-amp brings to the board

The JFET front end keeps input bias current at 2 pA, so it works directly with high-impedance sources such as photodiodes or pH probes without adding offset drift. Supply range spans 5 V to 36 V, making it equally at home on a single 5 V rail or a ±15 V split supply. The rail-to-rail output swings close to both supply rails, maximizing dynamic range in low-voltage systems.

The 8-SOIC package is surface-mount, so it reflows on a standard profile and fits a compact PCB layout.

Frequently asked questions

What is the equivalent of AD820AR-3V?

The closest functional equivalent is the AD820ARZ-REEL — same JFET op-amp, same 1.9 MHz GBW, same 3 V/µs slew rate, same 8-SOIC footprint, but RoHS-compliant and supplied in tape-and-reel. If you need a higher-speed JFET op-amp, the AD8627 (5 MHz, 5 V/µs) is a pin-compatible alternative in 8-SOIC.

What is AD820AR-3V's listed slew rate?

The slew rate is 3 V/µs, typical for a 1.9 MHz JFET op-amp. That means it can reproduce a 1 V peak-to-peak sine wave cleanly up to about 480 kHz — fine for audio, sensor filtering, and control loops.

Is AD820AR-3V a rail-to-rail output op amp?

Yes, the output stage is rail-to-rail, meaning it can swing within millivolts of both supply rails. This is useful in single-supply designs (e.g., 5 V only) where you need the full voltage range into an ADC or comparator.