AD8657ARMZ-RL

Overview

The AD8657ARMZ-RL is a dual-channel, precision, micropower CMOS operational amplifier featuring rail-to-rail input and output capabilities. 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 achieves low offset voltage (maximum 350 μV) and very low input bias current (maximum 20 pA). Key electrical parameters include a gain bandwidth product of 230 kHz, a slew rate of 80 V/ms, and a typical quiescent supply current of 18 μA per amplifier. It is unity-gain stable and specified over an extended industrial temperature range of −40°C to +125°C.

Feature Summary

• Micropower operation optimized for wide supply voltage ranges with low quiescent current consumption.
• Precision performance utilizing DigiTrim trimming technique to achieve low offset voltage and drift.
• Rail-to-rail input and output stages allowing full signal swing across the supply range.
• High immunity to electromagnetic interference for reliable operation in noisy environments.

Applications

• Portable operating systems
• Current monitors
• 4 mA to 20 mA loop drivers
• Buffer/level shifting
• Multipole filters

Procurement Notes

Verify the specific ordering suffix RL against the manufacturer's official documentation to confirm reel packaging specifications. Ensure compatibility with the required MSOP-8 package variant. Confirm that the component meets all necessary RoHS compliance requirements for the target application environment before finalizing procurement.

Selection Notes

Select this component when both high precision and low power consumption are critical constraints. The wide supply voltage range supports diverse system architectures. Verify that the 230 kHz bandwidth and 80 V/ms slew rate meet the dynamic signal requirements. Consider the EMI rejection ratio if the application involves significant radio frequency interference.

Part Context

The AD8657 is part of Analog Devices' precision micropower operational amplifier family. It shares architectural similarities with the AD8659 quad version but provides two channels in an 8-lead MSOP package. This configuration allows designers to implement dual-channel signal conditioning circuits within a compact footprint suitable for space-constrained portable devices.

Replacement Considerations

Public confirmed substitute part numbers: None identified in source material.