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 features a 1.25MHz gain-bandwidth product and rail-to-rail outputs. The comparator offers 185ns propagation delay with internal ±2mV hysteresis for noise immunity. This device lacks an internal voltage reference but provides accessible comparator inputs.

Feature Summary

• Combines a unity-gain stable op amp and a fast comparator in a space-saving µMAX package
• Ultra-low power consumption with 340µA supply current at +2.5V to +5.5V
• Rail-to-rail output swing for both the amplifier and comparator stages
• Internal ±2mV comparator hysteresis ensures noise immunity and prevents oscillations

Applications

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

Procurement Notes

Verify component authenticity through authorized Analog Devices channels. Confirm the specific suffix indicates tape-and-reel packaging. Ensure compatibility with existing board layouts due to the µMAX-8 footprint. Review latest datasheets for any manufacturing updates or lifecycle status changes before finalizing procurement plans.

Selection Notes

Select this part when a combined amplification and comparison function is required in a compact form factor. Choose over discrete solutions to save board space and reduce component count. Consider the MAX9000 variant if an internal precision reference is needed instead of external components.

Part Context

This component belongs to the MAX9000 family of mixed-signal ICs designed for battery-powered applications. It integrates analog signal conditioning and decision-making capabilities into a single chip. The family shares common architectural features while varying in reference inclusion and shutdown modes to suit different system requirements.

Replacement Considerations

Direct replacements within the same family include the MAX9005, which shares identical electrical characteristics and pinout but may differ in packaging options. Verify that substitute parts maintain the same gain-bandwidth product and propagation delay specifications for functional equivalence.

FAQ

Does the MAX9002 include an internal voltage reference?

No, the MAX9002 does not feature an internal precision reference. Unlike the MAX9000 or MAX9003, it requires external reference components if a stable voltage source is needed.

What is the input common-mode voltage range for the comparator?

The comparator's input common-mode voltage extends from 150mV below the negative supply to within 1.1V of the positive supply, allowing ground sensing capabilities.

How does the device handle phase reversal during overdrive?

Both the operational amplifier and the comparator are designed to exhibit no phase reversal even when the inputs are overdriven beyond the common-mode range.