ADA4622-4ARZ-R7

Overview

The ADA4622-4ARZ-R7 is a quad-channel, precision operational amplifier from Analog Devices Inc., featuring JFET inputs and rail-to-rail output. It operates on a single supply of 5 V to 30 V or dual supplies of ±2.5 V to ±15 V across an extended temperature range of -40°C to +125°C. Key electrical parameters include an 8 MHz gain bandwidth product, 23 V/µs typical slew rate, and low input bias current of ±10 pA maximum at 25°C. The device offers A grade offset voltage up to ±0.8 mV and B grade up to ±0.35 mV, with corresponding drift specifications. It provides strong output drive capability for driving SAR ADCs and includes integrated EMI filters.

Feature Summary

• Next-generation precision JFET op amp with rail-to-rail output and wide gain bandwidth
• Integrated electromagnetic interference (EMI) rejection filters for improved signal robustness
• Low input bias current and low offset voltage with specified thermal drift characteristics
• High slew rate and strong output drive capability suitable for driving modern ADCs

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 ARZ suffix against the manufacturer's official ordering guide. Confirm that the component meets the required environmental standards and temperature ratings for your application. Ensure compatibility with your PCB footprint and soldering profile. Cross-reference the datasheet revision to confirm all electrical specifications match your design requirements before finalizing procurement.

Selection Notes

Select this component when multiple high-precision channels are required in a compact form factor. The quad configuration reduces board space compared to using four separate single-channel devices. Consider the B grade if tighter offset voltage and drift specifications are necessary for your application. Evaluate the power consumption per channel against system constraints, noting the supply current varies slightly with temperature and voltage.

Part Context

The ADA4622 series represents the next generation of the AD820/AD822/AD824 family, offering improvements in noise performance, DC precision, and EMI rejection while maintaining similar power consumption. The ADA4622-4 variant specifically integrates four independent amplifiers into a single package, available in 14-lead SOIC_N and 16-lead LFCSP formats. This makes it suitable for applications requiring multiple signal paths without increasing component count.

Replacement Considerations

The ADA4622-4 is designed as a direct upgrade for the AD824. Verify pinout compatibility and ensure that the improved specifications such as lower noise and higher CMRR meet or exceed your existing design requirements. Check if the alternative device offers the same package options and operating temperature range.