AD8620AR-REEL

Overview

The AD8620AR-REEL is a dual-channel, precision JFET input operational amplifier manufactured by Analog Devices. It features a gain bandwidth product of 25 MHz and a slew rate of 60 V/μs at ±13 V supplies. Key electrical specifications include a maximum input offset voltage of 100 μV, an input bias current of 10 pA maximum, and a voltage noise density of 6 nV/√Hz. The device operates on dual supplies ranging from ±5 V to ±13 V with a supply current of approximately 3.5 mA per amplifier. It is housed in an 8-lead SOIC package and is specified for operation over an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Features extremely low input bias current that remains stable across the entire operating temperature range.
• Capable of driving large capacitive loads without external compensation while maintaining unconditional stability.
• Designed with no phase reversal characteristics when inputs are forced beyond the common-mode voltage range.

Applications

• Photodiode amplifiers
• Automated test equipment (ATE) circuits
• High-performance filters
• Fast precision integrators

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the tape and reel packaging format. Ensure the component matches the exact pinout and package dimensions defined in the datasheet. Confirm compliance with relevant environmental standards as listed in the product specifications before finalizing procurement.

Selection Notes

Select this component for applications requiring high precision combined with wide bandwidth and low noise. It is suitable for driving high-performance ADC inputs or buffering DAC outputs due to its high output drive capability. Consider the extended temperature range and low power consumption benefits for portable or high-density instrumentation designs.

Part Context

This part belongs to the AD8610/AD8620 family of very high precision JFET input amplifiers. Manufactured using the XFCB process, these devices offer ultralow offset voltage and drift alongside very low input voltage and current noise. The AD8620 specifically provides dual channels within a single compact surface-mount package.

Replacement Considerations

Consult the manufacturer's official replacement guide for verified substitute part numbers. Do not assume functional equivalence based solely on package compatibility or generic specifications.

FAQ

Is the AD8620 unity gain stable?

Yes, the AD8620 is unconditionally stable in all gains, including unity gain configurations.

What is the maximum supply voltage for the AD8620?

The absolute maximum supply voltage rating is 27.3 V, but the recommended operating range is ±5 V to ±13 V.