ADA4622-1ARJZ-R2

Overview

The ADA4622-1ARJZ-R2 is a single-channel, precision JFET input operational amplifier from Analog Devices. It operates on a single supply voltage ranging from 5 V to 30 V and features rail-to-rail output capability. The device provides an 8 MHz gain bandwidth product and a typical slew rate of 23 V/µs. Key electrical characteristics include a maximum input bias current of ±10 pA at 25°C, a maximum offset voltage of ±0.8 mV (A grade), and a shutdown function. It is housed in a 5-lead SOT-23 package.

Feature Summary

• Features a low input bias current of ±10 pA maximum at 25°C for high impedance applications
• Includes a shutdown pin to reduce power consumption when the device is not in use
• Provides rail-to-rail output swing to maximize dynamic range in single-supply systems
• Offers enhanced electromagnetic interference rejection ratio for signal robustness

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 R2 corresponds to the required tape and reel packaging configuration before procurement. Confirm that the A-grade offset voltage specifications meet the design requirements for the intended application environment. Ensure the SOT-23-5 footprint matches the PCB layout constraints and thermal management strategy.

Selection Notes

Select this component for applications requiring low bias current and high DC precision in a compact surface-mount package. The inclusion of a shutdown feature makes it suitable for battery-powered or power-sensitive designs. Consider the 8 MHz bandwidth and 23 V/µs slew rate for moderate-speed signal processing tasks where rail-to-rail output is necessary.

Part Context

The ADA4622-1ARJZ-R2 belongs to the ADA4622 family, which serves as the next generation of the AD820 series. This family improves upon previous models by offering reduced voltage noise, lower offset voltage, and added offset voltage drift specifications while maintaining similar supply currents. The device is designed for single-supply operation with extended industrial temperature ranges.

Replacement Considerations

The ADA4622-1 is the direct successor to the AD820. When replacing legacy components, verify that the improved offset voltage drift and noise characteristics align with the system's precision requirements. Ensure the new part's SOT-23-5 pinout is compatible with the existing board layout if a drop-in replacement is desired.