AD8546ARMZ-R7

Overview

The AD8546ARMZ-R7 is a dual-channel, micropower CMOS operational amplifier manufactured by Analog Devices Inc. It features rail-to-rail input and output (RRIO) capabilities and operates on supply voltages ranging from 2.7 V to 18 V single-supply or ±1.35 V to ±9 V dual-supply. The device draws a maximum supply current of 22 μA per amplifier. Key electrical specifications include a gain-bandwidth product of 240 kHz at AV = 100, a unity-gain crossover frequency of 240 kHz, and a slew rate of 80 V/ms. It offers an input bias current of 20 pA maximum and a large signal voltage gain of 110 dB minimum.

Feature Summary

• Rail-to-rail input and output functionality for increased dynamic range
• Micropower consumption optimized for battery-powered applications
• High immunity to electromagnetic interference
• Unity-gain stable operation with low input bias current

Applications

• Portable medical equipment
• Remote sensors
• Transimpedance amplifiers
• Current monitors
• 4 mA to 20 mA loop drivers

Procurement Notes

Verify the specific ordering suffix R7 corresponds to the reel packaging configuration required for your assembly line. Confirm that the component meets RoHS compliance standards as indicated in the manufacturer documentation. Ensure the extended industrial temperature rating aligns with your environmental operating conditions before finalizing procurement.

Selection Notes

Select this component when designing circuits requiring low power consumption alongside wide supply voltage flexibility. The RRIO feature makes it suitable for driving low-frequency data converters directly. Consider its high EMI rejection ratio for use in noisy environments such as wireless sensor networks or portable instrumentation where signal integrity is critical.

Part Context

This part belongs to the AD8546/AD8548 family of micropower op amps designed for high-impedance inputs. While the AD8546 provides two channels in an 8-lead MSOP package, the quad-channel variant is available separately. The device is specifically engineered for applications demanding minimal quiescent current without sacrificing bandwidth or precision over a broad temperature range.

Replacement Considerations

Consult the official Analog Devices selection guide for compatible alternatives within the micropower operational amplifier portfolio. Verify pinout compatibility and electrical parameter overlaps if substituting with other dual-channel RRIO devices from different manufacturers.