ADA4622-2BRZ-RL

Overview

The ADA4622-2BRZ-RL is a dual-channel precision operational amplifier from Analog Devices, serving as the next-generation successor to the AD822. It features JFET inputs with rail-to-rail output capability and operates on a single supply voltage ranging from 5 V to 30 V. 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 B-grade offset voltage performance of ±0.35 mV and drift of ±2 µV/°C. It is housed in an 8-lead SOIC package and designed for operation across an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Next-generation upgrade to the AD822 with improved DC precision, including reduced offset voltage and added thermal drift specifications.
• Rail-to-rail output swing combined with an input voltage range that includes the negative supply rail.
• Enhanced electromagnetic interference rejection ratio (EMIRR) providing signal robustness against switching noise sources.
• Low input bias current characteristic inherent to JFET input technology.

Applications

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

Procurement Notes

Verify the specific ordering suffix '-RL' corresponds to the reel packaging format required for your assembly line. Confirm that the 'B' grade designation aligns with your design's tolerance requirements for offset voltage and drift. Ensure the 8-lead SOIC_N package dimensions are compatible with your PCB footprint and thermal management strategy.

Selection Notes

Select this component when upgrading from legacy AD822 designs to benefit from lower noise and higher speed without changing pinouts. The dual-channel configuration is suitable for applications requiring matched characteristics between two channels. Consider the B-grade specifications if tighter offset voltage and drift limits are necessary compared to the standard A-grade version.

Part Context

This part belongs to the ADA4622 family, which also includes single-channel (ADA4622-1) and quad-channel (ADA4622-4) variants. All members share similar core technologies but differ in channel count and available packages. The ADA4622 series is positioned as a modern replacement for older precision JFET op-amps, offering better dynamic performance and EMI immunity while maintaining industry-standard pinouts.

Replacement Considerations

The datasheet explicitly identifies the ADA4622-2 as the next generation of the AD822. Designers replacing AD822 devices should verify that the improved slew rate and bandwidth do not require compensation adjustments in existing circuits.