ADA4622-1ARZ-R7

Overview

The ADA4622-1ARZ-R7 is a single-channel, precision JFET input operational amplifier from Analog Devices. It operates within a supply voltage range of 5 V to 30 V and supports an extended industrial temperature range of -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 includes a shutdown function via Pin 8.

Feature Summary

• Next-generation upgrade for AD820 with improved DC precision and lower offset voltage drift
• Integrated input EMI filters enhance signal robustness against switching noise sources
• Rail-to-rail output swing accommodates full dynamic range operation
• Low input bias current ensures minimal loading on 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 grade (A or B) required for your application, as offset voltage and drift specifications differ between grades. Confirm that the 8-lead SOIC package matches your PCB footprint. Ensure the R7 suffix aligns with reel packaging requirements for automated assembly processes.

Selection Notes

Select this component when upgrading legacy AD820 designs without compromising flexibility. Choose the A grade for general precision needs or the B grade for applications requiring tighter offset voltage and drift tolerances. Consider the SOT-23 or LFCSP packages if space constraints exist, though the ARZ suffix denotes the standard 8-lead SOIC_N package.

Part Context

The ADA4622 series represents the next generation of single-supply, rail-to-rail output precision op amps. It improves upon the AD820 by reducing broadband noise by 25% and 1/f noise by half while maintaining similar power consumption. The architecture supports both single and dual supply configurations, making it versatile for various industrial and instrumentation applications.

Replacement Considerations

Public confirmed substitute part numbers: None.