MAX952EUA+

Overview

The MAX952EUA+ is an ultra-low-power, single-supply integrated circuit combining a decompensated operational amplifier, a comparator, and a precision 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 features a 125kHz gain bandwidth product and stability for gains of 10V/V or greater. An internal 1.2V ±2% bandgap reference connects to the comparator's inverting input. Both output stages swing rail-to-rail, and the device functions reliably across temperatures from -40°C to +85°C.

Feature Summary

• Combines a decompensated op amp, comparator, and internal 1.2V reference in an 8-pin μMAX package
• Ultra-low power consumption with 7μA typical supply current
• Outputs swing rail-to-rail with common-mode input range including ground
• Comparator includes internal hysteresis for clean switching

Applications

• Battery-powered portable instruments and terminals
• Low-frequency local-area alarms and detectors
• Photodiode preamplifiers
• Smart card interfaces
• Infrared receivers for remote controls

Procurement Notes

Verify the specific suffix 'EUA+' against the manufacturer's official documentation to confirm the exact temperature grade, package type, and lead-free status. Ensure design compatibility with the 8-pin μMAX footprint and validate that the 125kHz bandwidth meets system requirements.

Selection Notes

Select this component when a combined signal conditioning and threshold detection solution is required in minimal space. The MAX952 is distinct from the unity-gain stable MAX951 due to its 125kHz bandwidth and requirement for gains of 10V/V or greater. Consider the MAX953 or MAX954 if an internal reference is not needed.

Part Context

The MAX952 belongs to the MAX951–MAX954 family of micropower mixed-signal ICs designed for battery-operated applications. These devices integrate analog building blocks typically requiring multiple discrete components into a single compact package, simplifying layout and reducing board space while maintaining low quiescent current.

Replacement Considerations

Official substitutes include other members of the MAX95x family such as the MAX951, MAX953, or MAX954, provided their specific electrical characteristics like bandwidth and reference availability align with the design needs.

FAQ

What is the stability requirement for the MAX952 operational amplifier?

The MAX952 op amp is decompensated and is stable only for closed-loop gains of 10V/V or greater.

How does the MAX952 handle comparator noise immunity?

The comparator includes ±3mV of internal hysteresis to ensure clean output switching even with slow-moving input signals.