AD8666WARZ-R7

Overview

The AD8666WARZ-R7 is a dual, low-cost, rail-to-rail output CMOS operational amplifier from Analog Devices. It operates on single supplies of 5 V to 16 V or dual supplies of ±2.5 V to ±8 V. Key electrical specifications include a gain-bandwidth product of 4 MHz and a slew rate of 3.5 V/µs. The device features a maximum input offset voltage of 2.5 mV and an input bias current of 1 pA. Noise performance includes a density of 8 nV/√Hz at 10 kHz. It is qualified for automotive applications and housed in an 8-lead SOIC package.

Feature Summary

• Rail-to-rail output capability with unity-gain stability
• Low input bias current of 1 pA maximum
• Qualified for automotive applications under AEC-Q100 standards
• Extended industrial operating temperature range

Applications

• Sensor amplification
• Photodiode amplification
• ADC driver circuits
• Medical equipment signal conditioning

Procurement Notes

Verify the specific suffix 'R7' indicates tape and reel packaging when sourcing. Confirm that the 'W' designation ensures compliance with automotive quality requirements if required by the design specification. Ensure the component meets RoHS compliance standards as indicated by the 'Z' suffix.

Selection Notes

Select this component for cost-sensitive designs requiring high input impedance and low noise. It serves as a suitable alternative to higher-priced JFET amplifiers in systems utilizing high-impedance sensors. Verify that the 4 MHz bandwidth aligns with the signal frequency requirements of the application circuit.

Part Context

This part belongs to the AD866x family of single-supply, rail-to-rail output amplifiers. The family offers extended supply voltage ranges up to 16 V. The AD8666 variant specifically provides two channels within a compact 8-lead package format.

Replacement Considerations

The AD8666ARZ-R7 is the commercial grade equivalent without automotive qualification.