ADA4666-2ARMZ

Overview

The ADA4666-2 is a dual-channel CMOS operational amplifier featuring rail-to-rail input and output capabilities. It operates on supply voltages ranging from 3 V to 18 V with a maximum supply current of 725 µA per channel. Key electrical specifications include a gain bandwidth product of 4 MHz, a slew rate of 2 V/µs, and an input offset voltage of 0.5 mV typical at 25°C. The device maintains unity-gain stability and functions reliably across an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Rail-to-rail input and output stages enable full signal swing capability across the entire supply voltage range.
• Low power consumption design optimized for high-voltage single-supply applications while maintaining high bandwidth performance.
• CMOS architecture provides extremely low input bias current and high input impedance for interfacing with high-impedance sources.

Applications

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

Procurement Notes

Verify that the ordering suffix matches the required packaging format, as the base part number may be available in tubes or tape-and-reel configurations. Confirm the specific package variant, such as MSOP, aligns with the board layout requirements. Ensure compliance with RoHS directives and check for any specific environmental certifications required by the target application before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring wide dynamic input ranges and high output drive capability under low power constraints. It is suitable for battery-powered instrumentation where supply voltages vary between 3 V and 18 V. Consider the thermal resistance characteristics if operating near the upper temperature limits or with significant load currents to ensure junction temperatures remain within safe operating areas.

Part Context

This device belongs to the ADA4666 family of precision low-power operational amplifiers manufactured by Analog Devices Inc. It is designed to bridge the gap between low-power CMOS technology and high-performance analog signal processing. The dual configuration allows for cost-effective implementation of differential signal chains in compact surface-mount packages.

Replacement Considerations

ADA4666-2ACPZ-R7

FAQ

Is the ADA4666-2 unity-gain stable?

Yes, the datasheet specifies that the amplifier is unity-gain stable.

What is the maximum supply voltage for this device?

The absolute maximum rating for the supply voltage is 20.5 V, though it is typically operated up to 18 V.