MAX952EPA+

Overview

The MAX952EPA+ is an ultra-low-power, single-supply analog device integrating a decompensated operational amplifier, a comparator with internal hysteresis, and a precision bandgap reference within an 8-pin plastic DIP package. It operates from a supply voltage range of 2.7V to 7V with a typical supply current of 7μA. The op amp offers a 125kHz gain bandwidth product and stability for gains of 10V/V or greater. The comparator features an internal 1.2V ±2% reference connected to its inverting input, ensuring clean switching even with slow-moving signals.

Feature Summary

• Integrates a decompensated op amp, comparator, and 1.2V reference in one package
• Ultra-low power consumption with 7μA typical supply current
• Comparator includes internal ±3mV hysteresis for noise immunity
• Rail-to-rail output swing for both op amp and comparator

Applications

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

Procurement Notes

Verify the specific suffix 'EPA' confirms the -40°C to +85°C operating temperature range and 8-pin Plastic DIP packaging. Confirm RoHS compliance status via the manufacturer's documentation as indicated by the '+' suffix. Ensure design compatibility with single-supply operation between 2.7V and 7V.

Selection Notes

Select this component when a combined signal conditioning and threshold detection solution is required in a compact form factor. The decompensated op amp architecture suits applications requiring higher bandwidth at gains of 10V/V or more. The integrated reference eliminates the need for external voltage sources for the comparator threshold.

Part Context

This part belongs to the MAX951–MAX954 family of micropower mixed-signal devices. While sharing similar power characteristics and package options, the MAX952 specifically distinguishes itself by featuring a decompensated op amp optimized for gains of 10V/V or greater, unlike the unity-gain stable variants in the same series.

Replacement Considerations

Direct pin-compatible replacements within the same family include the MAX951EPA+, MAX953EPA+, and MAX954EPA+. Selection among these depends on whether unity-gain stability (MAX951/MAX953) or decompensated high-bandwidth performance (MAX952/MAX954) is required, and whether an internal reference is necessary.

FAQ

What is the stability requirement for the op amp in the MAX952?

The op amp in the MAX952 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 internal hysteresis of ±3mV to ensure clean output switching, even when processing slow-moving input signals.

Can the internal reference be bypassed?

No, the datasheet explicitly states not to bypass the reference output. It is stable for capacitive loads less than 100pF.