ADA4622-2BRZ-R7

Overview

The ADA4622-2BRZ-R7 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 single or dual supplies 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 B-grade variant offers a maximum offset voltage of ±0.35 mV and drift of ±2 µV/°C. It provides high common-mode rejection (87 dB typical) and excellent EMI rejection (90 dB), making it suitable for driving SAR ADCs in industrial environments.

Feature Summary

• Next-generation upgrade to the AD822 with improved DC precision and lower noise while maintaining similar power consumption.
• Rail-to-rail output swing with input voltage range including the negative supply rail.
• Integrated input EMI filters providing robust signal integrity against switching noise sources.
• High-speed performance with strong output drive capability for fast settling times.

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 reel quantity associated with the -R7 suffix against the manufacturer's official ordering guide. Confirm that the B-grade performance parameters meet the design requirements for offset voltage and drift. Ensure the procurement channel provides valid traceability documentation for this precision component.

Selection Notes

Select the ADA4622-2BRZ-R7 when a dual-channel configuration is required alongside the flexibility of single-supply operation. The B-grade specification is appropriate for applications demanding tighter offset voltage limits compared to the A-grade version. Consider the SOIC-8 package availability if surface-mount space is constrained but through-hole is not preferred.

Part Context

This device belongs to the ADA4622 family, which includes single (ADA4622-1) and quad (ADA4622-4) variants. It is designed to replace older AD822 components in existing designs without requiring schematic changes, offering enhanced performance metrics such as reduced voltage noise and improved common-mode rejection ratio.

Replacement Considerations

The ADA4622-2BRZ is explicitly documented as the next generation of the AD822. Designers upgrading from the AD822 should verify pin compatibility, noting that the ADA4622 maintains industry-standard pinouts for the SOIC-8 package.