ADA4620-2ARZ

Overview

The ADA4620-2ARZ is a dual precision JFET operational amplifier manufactured by Analog Devices Inc. It features a gain bandwidth product of 16.5 MHz and a slew rate of 34 V/µs. The device operates on supply voltages ranging from 4.5 V to 36 V with a typical input offset voltage of 30 µV and input bias current of 0.8 pA. It utilizes an 8-lead SOIC package and supports operation temperatures from -40°C to +125°C.

Feature Summary

• JFET input architecture providing ultra-low input bias current for high impedance signal sources
• Rail-to-rail output capability maximizing dynamic range in single-supply applications
• High slew rate and gain-bandwidth product suitable for demanding AC performance requirements

Applications

• Photodiode configurations requiring low noise and high speed
• Active loop filter designs
• Transimpedance amplifiers (TIA)
• Charge amplifiers
• Scientific and field instruments

Procurement Notes

Verify the specific suffix ARZ indicates the standard tube packaging variant when sourcing. Confirm that the component meets RoHS compliance standards required for your manufacturing process. Ensure the ordering quantity aligns with the manufacturer's standard tube pack size rather than reel quantities, as tape and reel variants typically carry different suffixes such as R7 or RL.

Selection Notes

Select this component when both high DC precision and fast AC response are necessary within a dual-channel configuration. The rail-to-rail output distinguishes it from non-swinging predecessors like the AD822. Consider the 16.5 MHz bandwidth limit if higher frequency signals are involved, and verify that the 36 V maximum supply voltage fits the system power budget constraints.

Part Context

This part belongs to the ADA4620 family of precision amplifiers designed to replace older generations while offering improved performance metrics. It serves as a dual-channel counterpart to the single-channel ADA4620-1ARZ. The series is characterized by combining JFET input stages with rail-to-rail outputs, targeting applications where previous bipolar or standard JFET op-amps lacked sufficient speed or output swing.

Replacement Considerations

The ADA4622-2BRZ is documented as a next-generation alternative within the same product line. Verify pin compatibility and electrical parameter differences before substitution.