ADA4661-2ARMZ-RL

Overview

The ADA4661-2ARMZ-RL is a dual precision CMOS operational amplifier featuring rail-to-rail input and output capabilities. It operates on supply voltages ranging from 3 V to 18 V single-supply or ±1.5 V to ±9 V dual-supply. Key electrical parameters include a maximum offset voltage of 150 µV at VSY/2, a typical gain bandwidth product of 4 MHz, and a maximum supply current of 725 µA per amplifier. The device maintains low input bias current and high common-mode rejection ratio across the specified temperature range.

Feature Summary

• Utilizes DigiTrim trimming technique for low offset voltage and drift
• Supports wide operating supply voltage range from 3 V to 18 V
• Provides rail-to-rail input and output swing capability
• Ensures unity-gain stability with high common-mode rejection

Applications

• Current shunt monitors
• Active filters
• Portable medical equipment
• Buffer and level shifting circuits
• High impedance sensor interfaces

Procurement Notes

Verify the specific package type and reel quantity against the official Analog Devices ordering guide before procurement. Confirm that the suffix -RL indicates tape and reel packaging suitable for automated assembly processes. Ensure compatibility with the intended PCB footprint and soldering profile requirements for the MSOP-8 package.

Selection Notes

Select this component when low power consumption is critical alongside precision signal conditioning in single-supply systems. The wide supply voltage range accommodates various battery-powered applications. Consider the rail-to-rail input/output feature for maximizing dynamic range in low-voltage environments where standard amplifiers may saturate prematurely.

Part Context

This part belongs to the ADA4661 family of precision low-power operational amplifiers manufactured by Analog Devices Inc. It is designed for applications requiring high accuracy without excessive power draw. The device integrates advanced CMOS technology to deliver performance comparable to bipolar amplifiers while maintaining lower quiescent current levels.

Replacement Considerations

ADA4666-2ARMZ-RL

FAQ

What is the maximum supply voltage for the ADA4661-2?

The absolute maximum supply voltage rating is 20.5 V, but it is optimized for operation up to 18 V.

Is the ADA4661-2 unity-gain stable?

Yes, the device is guaranteed to be unity-gain stable across the full specified temperature and supply voltage ranges.