MAX954ESA+T

Overview

The MAX954ESA+T is a single-supply integrated circuit combining a decompensated operational amplifier, a voltage comparator, and an internal precision reference within an 8-pin SO package. It operates from a supply voltage range of 2.4V to 7V with a typical quiescent current of 5μA. The op amp is stable for gains of 10V/V or greater, featuring a typical gain bandwidth of 125kHz and a slew rate of 66V/ms. Both the op amp and comparator inputs extend from the negative rail to within 1.6V of the positive rail, while outputs swing rail-to-rail.

Feature Summary

• Combines a decompensated op amp, comparator, and reference in a single 8-pin package
• Ultra-low power consumption with typical supply currents of 5μA
• Rail-to-rail input and output stages for maximum dynamic range
• Internal ±3mV hysteresis ensures clean switching for slow-moving signals

Applications

• Battery-powered portable instruments and terminals
• Low-frequency local-area alarms and detectors
• Photodiode preamplifiers
• Smart cards and infrared receivers for remote controls
• Smoke detectors and safety sensors

Procurement Notes

Verify the specific suffix 'ESA' confirms the 8-pin SOIC package and -40°C to +85°C operating temperature range. Confirm the '+' suffix indicates RoHS compliance. Ensure the source document explicitly supports the '+T' reel packaging designation if required for procurement specifications.

Selection Notes

Select this component when a single-supply design requires both amplification and threshold detection with minimal power draw. The MAX954 is specifically chosen over the MAX953 because it offers decompensated stability for closed-loop gains of 10V/V or greater, providing higher bandwidth and slew rate compared to unity-gain stable variants.

Part Context

This device belongs to the MAX951–MAX954 family of ultra-low-power, single-supply mixed-signal ICs. The family integrates micropower CMOS op amps, comparators, and bandgap references into compact 8-pin packages. The MAX954 variant specifically provides the decompensated op amp configuration optimized for higher frequency applications requiring gains of 10V/V or more.

Replacement Considerations

The MAX953ESA+T serves as a direct pin-compatible alternative if the application requires unity-gain stability rather than decompensated operation.