ADA4622-1ARZ-RL

Overview

The ADA4622-1ARZ-RL 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 features rail-to-rail output capability. Key electrical specifications include an 8 MHz gain bandwidth product, a typical slew rate of 23 V/µs, and a maximum input bias current of ±10 pA at 25°C. The device offers low offset voltage drift (±1 µV/°C for B grade) and high common-mode rejection ratio. It is housed in an 8-lead SOIC_N package and supports operation across an extended temperature range of -40°C to +125°C.

Feature Summary

• Next-generation upgrade to the AD820 series with improved DC precision and lower noise
• Rail-to-rail output swing with input voltage range including the negative supply rail
• High electromagnetic interference rejection ratio for robust signal integrity
• Integrated shutdown functionality via active-low disable pin

Applications

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

Procurement Notes

Verify that the ordering suffix ARZ corresponds to the 8-lead SOIC_N package variant. Confirm the specific grade (A or B) required for your offset voltage and drift specifications, as these parameters vary between grades. Ensure the reel quantity matches your production needs. Cross-reference the datasheet revision F specifications against your design requirements for supply current and thermal resistance.

Selection Notes

Select this component when upgrading from AD820 series designs requiring higher bandwidth and lower noise without changing pinouts. It is suitable for applications needing rail-to-rail output and input ranges extending to the negative supply. Consider the B grade if tighter offset voltage drift specifications are necessary compared to the A grade. Evaluate thermal performance based on the PCB layout and operating temperature range.

Part Context

This part belongs to the ADA4622 family, which includes dual (ADA4622-2) and quad (ADA4622-4) variants. The family shares similar core technologies, such as JFET inputs and rail-to-rail outputs, but differs in channel count and package options. The ADA4622-1ARZ-RL specifically provides a single amplifier in an 8-lead SOIC_N package, offering a compact solution for space-constrained designs compared to larger packages.

Replacement Considerations

Direct replacements within the same family include ADA4622-1BRZ (B grade version). For legacy compatibility, it serves as a drop-in replacement for the AD820 in terms of pinout and basic functionality, though electrical improvements should be accounted for in the design.