ADA4622-1ARJZ-R7

Overview

The ADA4622-1ARJZ-R7 is a single-channel, precision JFET input operational amplifier from Analog Devices. It operates on a supply voltage range of 5 V to 30 V and supports an extended industrial temperature range from -40°C to +125°C. The device features an 8 MHz gain bandwidth product and a typical slew rate of 23 V/µs. It provides rail-to-rail output capability and includes a shutdown function via the DISABLE pin. Key electrical specifications include a maximum input bias current of ±10 pA at 25°C and a B-grade offset voltage drift of ±1 µV/°C.

Feature Summary

• Next-generation upgrade for AD820 with improved DC precision and lower noise
• Rail-to-rail output swing extending to the negative supply rail
• Integrated EMI filters for enhanced signal robustness against switching noise
• Low input bias current suitable for high-impedance sensor interfaces

Applications

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

Procurement Notes

Verify the specific package type and grade when ordering. Confirm that the R7 suffix indicates reel packaging. Ensure compatibility with existing PCB footprints for the SOT-23-5 package. Check datasheet limits for absolute maximum ratings before implementation.

Selection Notes

Select this component for applications requiring low bias current and rail-to-rail output in a compact footprint. Consider the B-grade offset voltage drift if thermal stability is critical. Verify that the 8 MHz bandwidth meets the system's dynamic performance requirements.

Part Context

This part belongs to the ADA4622 family, which serves as the next generation of the AD820 series. It offers improvements in offset voltage, drift, and noise while maintaining similar power consumption. The family includes dual (ADA4622-2) and quad (ADA4622-4) variants for multi-channel applications.

Replacement Considerations

Direct replacements within the same family include ADA4622-1BRZ or ADA4622-1ARJZ. For legacy systems, the AD820 can be replaced, though performance characteristics will differ.