MAX9002EUA+T

Overview

The MAX9002EUA+T is a low-power, high-speed single-supply integrated circuit combining a unity-gain stable operational amplifier and a fast comparator. It operates from +2.5V to +5.5V supplies with typical quiescent current of 340µA. The op amp offers 1.25MHz gain-bandwidth product and rail-to-rail outputs. The comparator features 185ns propagation delay and ±2mV internal hysteresis. Unlike other family members, it lacks an internal reference but provides accessible comparator inputs.

Feature Summary

• Combines unity-gain stable op amp and fast comparator in space-saving µMAX package
• Ultra-low power consumption with 340µA supply current
• Rail-to-rail output swing for both amplifier and comparator stages
• Ground-sensing inputs allowing operation near negative supply rail

Applications

• Single-supply zero-photodiode preamplifiers
• Crossing detectors and smart card readers
• Infrared receivers and bar-code readers for remote controls
• Keyless entry sensor signal detection

Procurement Notes

Verify the specific suffix EA indicates the 8-pin µMAX package variant. Confirm availability status as distribution channels may list limited stock or obsolete status. Ensure the datasheet revision matches the design requirements for electrical characteristics.

Selection Notes

Select this part when unity-gain stability is required alongside rapid comparison without needing an internal voltage reference. Compare against MAX9000 if an internal 1.230V reference is necessary. Consider MAX9003 variants if higher bandwidth at gains of 10V/V or greater is needed instead.

Part Context

This component belongs to the MAX9000 family of mixed-signal ICs designed for portable battery-powered applications. It integrates analog signal conditioning and threshold detection functions into a single compact footprint, reducing board space compared to discrete solutions.

Replacement Considerations

Official substitutes within the same family include MAX9000EUA+T and MAX9003EUA+T. Verify pin compatibility and functional differences regarding the presence or absence of the internal precision reference before substitution.

FAQ

Does the MAX9002 include an internal voltage reference?

No, the MAX9002 does not feature an internal precision reference. The comparator's inverting input is available externally for connection to an external reference source.

What is the gain-bandwidth product of the operational amplifier?

The operational amplifier in the MAX9002 is unity-gain stable with a gain-bandwidth product of 1.25MHz.