MAX9003EUA+T

Overview

The MAX9003EUA+T is a low-power, high-speed single-supply integrated circuit combining an operational amplifier, a comparator, and a precision voltage reference in an 8-pin µMAX package. It operates from +2.5V to +5.5V supplies with typical quiescent current of 410µA. The op-amp offers an 8MHz gain-bandwidth product and is stable for closed-loop gains of +10V/V or greater. The comparator features a 185ns propagation delay and internal ±2mV hysteresis. An internal 1.230V reference provides ±1% accuracy.

Feature Summary

• Integrates a decompensated op-amp, fast comparator, and precision reference in a compact 8-pin µMAX package
• Operates on a single supply ranging from +2.5V to +5.5V with ultra-low power consumption
• Features rail-to-rail outputs for both the amplifier and comparator stages
• Includes built-in comparator hysteresis to ensure noise immunity and signal stability

Applications

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

Procurement Notes

Verify the specific suffix 'EUA+T' against the manufacturer's official documentation to confirm the exact tape-and-reel packaging and temperature grade. Ensure compatibility with the 8-pin µMAX footprint during PCB layout. Cross-reference the datasheet revision date to confirm electrical characteristics match the production batch requirements.

Selection Notes

Select this component when space is constrained by the need for three distinct analog functions in one package. Choose the MAX9003 variant specifically because its amplifier requires a minimum closed-loop gain of +10V/V for stability, unlike the unity-gain stable MAX9000. Verify that the system does not require shutdown functionality, which is absent in this model.

Part Context

This device belongs to the MAX9000 family of mixed-signal ICs designed for portable electronics. It shares the same physical package and basic architecture with variants like the MAX9000 and MAX9002 but differs in amplifier stability and reference inclusion. The family targets battery-powered applications requiring minimal current draw without sacrificing speed.

Replacement Considerations

Direct replacements within the same family include the MAX9000EUA+T if unity-gain stability is required, or the MAX9002EUA+T if the internal reference is unnecessary. Ensure any substitute matches the 8-pin µMAX outline dimensions and thermal dissipation capabilities.

FAQ

Is the MAX9003EUA+T unity-gain stable?

No, the MAX9003 is decompensated and is stable only for closed-loop gains of +10V/V or greater.

How is the comparator input configured in the MAX9003?

The inverting input of the comparator is internally connected to the precision reference output.

Does the MAX9003EUA+T support a shutdown mode?

No, the MAX9003 does not feature a shutdown pin; this function is available only in the MAX9001 and MAX9004 variants.