MAX953EUA+

Overview

The MAX953EUA+ is an ultra-low-power, single-supply integrated circuit combining a micro-power operational amplifier and a comparator within an 8-pin μMAX package. It operates from a supply voltage range of 2.4V to 7V with a typical supply current of 5μA. The op amp is internally compensated for unity-gain stability. Both the op amp and comparator feature rail-to-rail outputs and input common-mode ranges extending from the negative supply rail to within 1.6V of the positive rail.

Feature Summary

• Integrates a unity-gain stable operational amplifier and a high-impedance differential comparator in a compact 8-pin μMAX package
• Features rail-to-rail output stages for both the op amp and comparator, maximizing dynamic range on single supplies
• Includes internal ±3mV hysteresis in the comparator to ensure clean switching and noise immunity with slow-moving signals
• Operates with ultra-low quiescent current while maintaining linearity under loaded conditions

Applications

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

Procurement Notes

Verify the specific suffix 'EUA+' corresponds to the required temperature range (-40°C to +85°C) and RoHS compliance status. Confirm the 8-pin μMAX package dimensions match the PCB footprint requirements. Check for any recent product change notices or lifecycle status updates directly from Analog Devices/Maxim Integrated documentation before finalizing procurement plans.

Selection Notes

Select this component when a combined low-power op amp and comparator solution is needed in a small form factor. The MAX953 variant is appropriate when an internal reference is not required, distinguishing it from the MAX951/MAX952. Ensure the application benefits from the unity-gain stable op amp configuration and the comparator's internal hysteresis capabilities.

Part Context

The MAX953EUA+ belongs to the MAX951–MAX954 family of ultra-low-power, single-supply devices. This series integrates operational amplifiers, comparators, and optional bandgap references into 8-pin packages. The MAX953 specifically excludes the internal reference found in the MAX951/MAX952 models, offering a simplified design for applications requiring only signal conditioning and threshold detection.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.