AD8622ARZ

Overview

The AD8622ARZ is a dual precision operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail output swing, low supply current of 215 µA per amplifier typical, and an input bias current cancellation circuit providing very low input bias current over the full operating temperature range. The device operates from ±2.5 V to ±15 V supplies, with a maximum supply voltage of ±18 V. Key electrical parameters include a maximum offset voltage of 125 µV, maximum offset drift of 1.2 µV/°C, and a gain bandwidth product of 560 kHz at ±15 V operation.

Feature Summary

• Rail-to-rail output swing capability maximizes dynamic range for low power operation.
• Input bias current cancellation circuitry provides very low input bias current across the full operating temperature range.
• Unity gain stable design ensures stability in standard feedback configurations.

Applications

• Portable precision instrumentation
• Laser diode control loops
• Strain gage amplifiers
• Medical instrumentation
• Thermocouple amplifiers

Procurement Notes

Verify the package type matches the required PCB footprint, as the AD8622 series includes both SOIC and MSOP options. Confirm RoHS compliance status if environmental regulations apply to the assembly process. Ensure the ordering suffix corresponds to the specific reel or tube quantity needed for production. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when high DC precision and low noise are critical alongside low power consumption. The rail-to-rail output allows for maximum signal swing in single-supply systems. Consider the input bias current cancellation feature for applications requiring minimal loading on high-impedance sources. Verify that the gain bandwidth product meets the AC performance requirements of the target application.

Part Context

The AD8622ARZ belongs to the AD8622/AD8624 family of low-power, precision operational amplifiers. This family is designed for applications demanding high accuracy and low quiescent current. The AD8622 variant specifically provides two amplifiers in a compact surface-mount package, distinguishing it from the quad-channel AD8624.

Replacement Considerations

Check the Ordering Guide for alternative packages such as AD8622ARMZ (MSOP) or tape-and-reel variants like AD8622ARZ-REEL. These share identical electrical characteristics but differ in physical packaging and shipping format.