MAX952EUA+T

Overview

The MAX952EUA+T is a micropower, single-supply integrated circuit combining an operational amplifier, comparator, and internal reference within an 8-pin μMAX package. It operates from a supply voltage range of 2.7V to 7V with a typical supply current of 7μA. The op amp is decompensated for stability at gains of 10V/V or greater, featuring a typical bandwidth of 125kHz and a slew rate of 66V/ms. The comparator includes ±3mV internal hysteresis and rail-to-rail outputs.

Feature Summary

• Combines a decompensated op amp, comparator, and internal 1.2V bandgap reference in an 8-pin μMAX package
• Ultra-low power consumption with 7μA typical supply current across the full operating temperature range
• Rail-to-rail input and output stages for both the operational amplifier and comparator functions
• Comparator features internal ±3mV hysteresis to ensure clean switching with slow-moving signals

Applications

• Battery-powered portable instruments and terminals
• Low-frequency local-area alarms and detectors
• Photodiode preamplifiers and infrared receivers for remote controls
• Smoke detectors and safety sensors utilizing high-impedance inputs
• Smart cards and bar-code readers requiring low-power signal conditioning

Procurement Notes

Verify the specific suffix 'EUA' confirms the -40°C to +85°C industrial temperature range and μMAX packaging. Confirm RoHS compliance status through official manufacturer documentation as ordering suffixes may indicate environmental attributes. Ensure design compatibility with the decompensated op amp stability requirements for gain configurations.

Selection Notes

Select this device when a combined op amp and comparator solution is required in a minimal footprint. The MAX952 is distinct from the MAX951 due to its decompensated op amp architecture, which offers higher bandwidth but requires a minimum closed-loop gain of 10V/V for stability. Verify that the application does not require unity-gain stability for the amplifier section.

Part Context

The MAX952 belongs to the MAX951–MAX954 family of ultra-low-power mixed-signal devices. This series integrates analog signal processing components into a single compact package to reduce board space and system complexity. The MAX952 specifically targets applications needing moderate-speed amplification alongside threshold detection capabilities.

Replacement Considerations

The MAX951 serves as a functional alternative if unity-gain stable operation is required instead of the decompensated configuration. The MAX953 and MAX954 are suitable replacements if the internal reference is unnecessary, offering lower supply currents of 5μA typical. Package variations such as SO or DIP exist for different mounting requirements.