MAX953EUA

Overview

The MAX953EUA is a single-supply ultra-low-power analog device integrating a unity-gain stable operational amplifier, a comparator, and ground-referenced inputs within an 8-pin μMAX package. It operates from a supply voltage range of 2.4V to 7V with a typical quiescent current of 5μA. The op amp features a common-mode input range extending from the negative rail to 1.6V below the positive rail, while both output stages provide rail-to-rail swing. The integrated comparator includes ±3mV internal hysteresis for noise immunity.

Feature Summary

• Integrates a unity-gain stable op amp, comparator, and ground-referenced inputs in a compact 8-pin μMAX package
• Ultra-low power consumption with a typical supply current of 5μA across the operating temperature range
• Rail-to-rail output capability for both the operational amplifier and comparator stages
• Comparator includes built-in ±3mV internal hysteresis to ensure clean switching on slow-moving signals

Applications

• Smart Cards
• Battery-Powered Systems
• Photodiode Preamps
• Infrared Receivers for Remote Controls
• Smoke Detectors and Safety Sensors

Procurement Notes

Verify the specific suffix 'EUA' confirms the 8-pin μMAX package and -40°C to +85°C industrial temperature rating. Confirm RoHS compliance status via the manufacturer's documentation. Check for availability as this component may be subject to discontinuation or limited stock conditions.

Selection Notes

Select the MAX953EUA when a single-supply design requires minimal power consumption alongside signal conditioning and threshold detection. Choose this part over the MAX951 variant if an internal reference voltage is not required. Ensure the application benefits from the rail-to-rail output swing and low quiescent current characteristics.

Part Context

The MAX953EUA belongs to the MAX951–MAX954 family of ultra-low-power, single-supply amplifiers. This series combines micro-power operational amplifiers, comparators, and precision references into a single 8-pin package. The MAX953 specifically omits the internal bandgap reference found in the MAX951/MAX952 variants, offering a lower supply current of 5μa compared to the 7μA of its counterparts.

Replacement Considerations

Public confirmed substitute part numbers: MAX953ESA, MAX953EUA+.