AD8657ACPZ-RL

Overview

The AD8657ACPZ-RL is a dual micropower, precision, rail-to-rail input/output operational amplifier manufactured by Analog Devices Inc. It operates from a single supply of 2.7 V to 18 V or dual supplies of ±1.35 V to ±9 V. The device features a maximum quiescent supply current of 22 μA and utilizes DigiTrim® trimming for low offset voltage (350 μV max). Key electrical parameters include a gain bandwidth product of 230 kHz, an input bias current of 20 pA max, and a power supply rejection ratio of 115 dB. It is specified over the extended industrial temperature range of −40°C to +125°C.

Feature Summary

• Rail-to-rail input and output capability across the full supply voltage range
• Micropower consumption optimized for high-voltage operation with minimal quiescent current
• High immunity to electromagnetic interference (EMI)
• Precision performance achieved through patented DigiTrim® trimming technique

Applications

• Portable operating systems
• Current monitors in process and motor control applications
• 4 mA to 20 mA loop drivers
• Buffer/level shifting for sensor front ends
• Low power transimpedance amplifiers

Procurement Notes

Verify the specific package variant, as the AD8657 is available in both MSOP and LFCSP packages. Confirm that the ordering suffix corresponds to the reel packaging format required for your assembly line. Ensure compatibility with the extended industrial temperature range specifications if operating in extreme environments. Cross-reference the datasheet revision to confirm parameter consistency.

Selection Notes

Select this component when designing circuits requiring low power consumption alongside high precision in wide supply voltage ranges. It is suitable for battery-powered devices where minimizing quiescent current is critical. Consider its EMI immunity for use in noisy industrial environments. Verify that the 230 kHz bandwidth meets the signal processing requirements of the application.

Part Context

The AD8657 is part of the AD8657/AD8659 family of micropower precision amplifiers. While the AD8659 offers quad channels, the AD8657 provides dual channels in compact packages. This family is designed for applications demanding low offset voltage and low bias current without sacrificing power efficiency. The ACPZ suffix indicates the LFCSP package option.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.