ADA4622-1ARZ

Overview

The ADA4622-1ARZ is a single-channel, precision JFET input operational amplifier manufactured by Analog Devices Inc. It operates within a supply voltage range of 5 V to 30 V and supports an extended industrial temperature range from -40°C to +125°C. Key electrical specifications include a typical gain bandwidth product of 8 MHz, a low-to-high slew rate of 23 V/µs, and a maximum input bias current of ±10 pA at 25°C. The device features rail-to-rail output capability and offers B-grade offset voltage drift of ±1 µV/°C.

Feature Summary

• Next-generation upgrade for AD820 with improved DC precision and lower noise
• Integrated input EMI filters for enhanced signal robustness near switching noise sources
• Rail-to-rail output swing with input common-mode range including the negative supply
• High electromagnetic interference rejection ratio (EMIRR) for noisy environments

Applications

• High output impedance sensor interfaces
• Photodiode sensor interfaces
• Transimpedance amplifiers
• ADC drivers
• Precision filters and signal conditioning

Procurement Notes

Verify that the specific part number suffix matches the required package type and grade. Confirm the operating temperature range aligns with system requirements. Ensure proper ESD handling procedures are followed during assembly due to the sensitivity of the JFET input stage. Cross-reference the datasheet revision to confirm all electrical characteristics meet design specifications.

Selection Notes

Select this component when upgrading legacy AD820 designs without compromising flexibility. Choose the B-grade variant if strict offset voltage drift limits are necessary. Consider the SOT-23 or SOIC packages based on available board space. Evaluate the shutdown pin functionality if power management is a priority in the application design.

Part Context

The ADA4622-1ARZ belongs to the ADA4622 series, which includes single, dual, and quad channel variants. This series represents the next generation of precision JFET input amplifiers designed to replace older models like the AD820. The ARZ suffix indicates an 8-lead SOIC_N package compliant with RoHS standards.

Replacement Considerations

ADA4622-1ARZN

FAQ

Does the ADA4622-1ARZ support shutdown operation?

Yes, the 8-lead SOIC_N package version includes a dedicated DISABLE pin (Pin 8) that allows the amplifier to be shut down to reduce power consumption.

What is the input common-mode voltage range?

The input voltage range includes the negative supply rail (V−), allowing for ground-sensing capabilities in single-supply applications.