AD8622ARMZ-R7

Overview

The AD8622ARMZ-R7 is a dual precision operational amplifier from Analog Devices, housed in an 8-lead MSOP package. It features rail-to-rail output swing and operates within a supply voltage range of ±2.5 V to ±15 V. The device exhibits very low offset voltage (maximum 125 μV) and drift (1.2 μV/°C), alongside low input bias current (200 pA maximum). Key electrical parameters include a gain-bandwidth product of 560 kHz, a slew rate of 0.48 V/µs, and a typical supply current of 215 µA per amplifier.

Feature Summary

• Features input bias current cancellation circuitry for extremely low bias current across the full operating temperature range.
• Provides rail-to-rail output swing capability while maintaining unity gain stability.
• Designed with high common-mode rejection ratio and low voltage noise density for precision signal processing.

Applications

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

Procurement Notes

Verify that the ordering suffix -R7 corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm the component meets RoHS compliance standards as indicated by the Z suffix. Ensure the specific MSOP package dimensions align with the target PCB footprint design constraints before finalizing procurement.

Selection Notes

Select this component when applications demand low power consumption combined with high DC precision. The device is suitable for systems requiring rail-to-rail output dynamics without sacrificing accuracy. Consider its extended industrial temperature range and low noise characteristics for sensitive analog front-end designs where minimal error sources are critical.

Part Context

This part belongs to the AD8622/AD8624 family of low-power, precision operational amplifiers manufactured by Analog Devices. The series is characterized by CMOS technology optimized for micropower applications. The AD8622 specifically provides two independent amplifier channels within a compact surface-mount package, distinguishing it from single-channel or quad-channel variants in the same product line.

Replacement Considerations

The AD8622ARZ serves as a pin-compatible alternative utilizing an 8-lead SOIC package instead of MSOP. Verify package compatibility and thermal resistance differences if substituting between these form factors.

FAQ

Does the AD8622ARMZ-R7 exhibit phase reversal?

No, the device is designed to prevent output phase reversal even if one or both inputs exceed the specified input voltage range, provided they remain within the supply rails.

What is the maximum differential input voltage allowed?

Internal diodes and series resistors limit the maximum differential input voltage to ±10 V to prevent base-emitter junction breakdown.