ADA4665-2ARZ-R7

Overview

The ADA4665-2ARZ-R7 is a dual-channel CMOS operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail input and output capabilities, optimized for low power budget designs with a typical supply current of 290 μA per amplifier at 25°C. The device operates on single supplies from 5 V to 16 V or dual supplies from ±2.5 V to ±8 V. Key electrical specifications include a gain bandwidth product of 1.2 MHz, a slew rate of 1 V/μs, and an offset voltage drift of 3 μV/°C. It is housed in an 8-Lead SOIC package and specified for operation between -40°C and +125°C.

Feature Summary

• Rail-to-rail input and output swing capability maximizes dynamic range across the full supply voltage.
• Low supply current consumption optimizes performance for battery-powered and energy-constrained systems.
• Very low input bias current ensures minimal loading effects on high-impedance signal sources.
• Unity-gain stability allows for direct configuration in buffer applications without oscillation risks.

Applications

• Portable systems requiring extended battery life
• Medical equipment and physiological measurement circuits
• Current shunt sensors for power metering and feedback control
• Active filters such as Sallen-Key topologies

Procurement Notes

Verify that the ordering suffix matches the required reel quantity and packaging format. Confirm RoHS compliance status through official manufacturer documentation. Ensure the component source is authorized to prevent counterfeit parts. Cross-reference the specific lot code against quality assurance records if reliability is critical for the intended deployment environment.

Selection Notes

Select this component when designing circuits that require both wide input common-mode range and low power consumption. It is suitable for sensor front ends where input bias current must be minimized. Consider the 1.2 MHz bandwidth for applications involving moderate-speed signal processing. Verify that the load capacitance requirements align with the stability characteristics defined in the datasheet.

Part Context

This part belongs to the ADA4665 family of precision amplifiers designed for low-voltage, low-power applications. It serves as a dual-channel variant within the broader portfolio of rail-to-rail input/output operational amplifiers offered by Analog Devices. The series targets cost-sensitive designs while maintaining high precision metrics.

Replacement Considerations

ADA4665-2ARZ

FAQ

What is the maximum supply voltage for the ADA4665-2?

The absolute maximum supply voltage rating is 16.5 V. Functional operation is supported up to 16 V.

How does the input stage handle rail-to-rail operation?

The input stage utilizes two differential pairs (nMOS and pMOS) to cover the full input voltage range, transitioning between them near the positive rail.