MAX9000EUA-T

Overview

The MAX9000EUA-T is a low-power, high-speed single-supply integrated circuit combining an operational amplifier, a comparator, and a precision voltage reference. It operates from +2.5V to +5.5V supplies with quiescent current typically at 410µA. The op amp offers unity-gain stability with a 1.25MHz gain-bandwidth product. The comparator features a 185ns propagation delay and internal ±2mV hysteresis. An internal 1.230V reference provides ±1% accuracy. The device is housed in an 8-pin µMAX package.

Feature Summary

• Combines a high-speed op amp, fast comparator, and precision reference in a compact 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 internal built-in hysteresis to ensure noise immunity during signal transitions

Applications

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

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration. Confirm that the 'E' designation aligns with the required industrial temperature range specifications. Ensure compatibility with the intended board layout regarding the 8-pin µMAX footprint dimensions.

Selection Notes

Select this component when space constraints require integrating three distinct analog functions into one small footprint. It is suitable for battery-powered applications due to its low quiescent current draw. Choose this part if the design requires ground-sensing inputs and rail-to-rail output swing capabilities.

Part Context

This device belongs to the MAX9000 family of mixed-signal ICs designed for portable electronics. It integrates analog processing blocks to reduce component count in signal conditioning circuits. The family includes variants with different gain bandwidths and shutdown modes to suit various performance requirements.

Replacement Considerations

Consult official manufacturer documentation for confirmed substitute part numbers. Verify pinout compatibility and electrical parameter overlaps before implementing any alternative components in existing designs.

FAQ

How does the MAX9000 handle phase reversal when inputs exceed the common-mode range?

The device is designed to prevent phase reversal for overdriven inputs in both the op amp and comparator sections.

What is the function of the internal hysteresis in the comparator section?

The internal ±2mV hysteresis provides noise immunity and prevents oscillations even when processing slow-moving input signals.