AD8546ARMZ

Overview

The AD8546ARMZ 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 slew rate of 80 V/ms, and a large signal voltage gain of 110 dB minimum. It maintains unity-gain stability with excellent electromagnetic interference immunity.

Feature Summary

• Rail-to-rail input and output capability for increased dynamic range
• Micropower consumption optimized for battery-powered applications
• High immunity to electromagnetic interference
• Extended industrial temperature rating

Applications

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

Procurement Notes

Verify the specific package type and marking against the official datasheet before procurement. Confirm that the ordering suffix matches the required tape-and-reel or tube configuration if applicable. Ensure the component meets RoHS compliance standards as specified in the manufacturer documentation. Cross-reference the part number with authorized distributors to validate authenticity and traceability.

Selection Notes

Select this component when low power consumption and wide supply voltage operation are critical requirements. The RRIO feature makes it suitable for driving low-frequency data converters directly. Consider the extended industrial temperature range for harsh environments. Evaluate the low input bias current for high-impedance sensor interfaces.

Part Context

The AD8546 is part of the AD8546/AD8548 family of micropower op amps. While the AD8548 offers quad channels in a 14-lead SOIC_N package, the AD8546 provides dual channels in an 8-lead MSOP package. Both share identical electrical characteristics and performance metrics within the same series.

Replacement Considerations

Consult the manufacturer's selection guide for alternative micropower op amps. Verify pinout compatibility and electrical parameter equivalence before substituting.