MAX9002EUA+

Overview

The MAX9002EUA+ is a low-power, high-speed single-supply integrated circuit combining a unity-gain stable operational amplifier, a fast comparator, and ground-sensing inputs. 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 delivering ±2.5mA. The comparator offers 185ns propagation delay with internal ±2mV hysteresis for noise immunity. Packaged in an 8-pin µMAX format, it supports -40°C to +85°C operation without an internal voltage reference.

Feature Summary

• Combines a high-speed op amp, fast comparator, and ground-sensing inputs in a compact package
• Unity-gain stable amplifier with rail-to-rail output capability
• Comparator includes built-in hysteresis to prevent oscillations
• Low power consumption suitable for portable applications

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 device revision and manufacturing lot date code upon receipt to ensure compliance with current quality standards. Confirm that the 8-pin µMAX package dimensions match your PCB footprint requirements exactly. Check for any obsolescence notices or lifecycle status updates directly from Analog Devices before finalizing production plans.

Selection Notes

Select this component when a combined amplification and comparison function is required in a space-constrained design. It is ideal for battery-powered systems due to its low supply current. Choose this part over discrete solutions to reduce board area and simplify biasing networks while maintaining high-speed performance.

Part Context

This device belongs to the MAX9000 family of mixed-signal ICs designed for single-supply operation. It shares architectural similarities with the MAX9000, MAX9001, MAX9003, MAX9004, and MAX9005. The primary distinction lies in the absence of an internal precision voltage reference and the availability of the comparator's inverting input pin, differentiating it from reference-equipped variants.

Replacement Considerations

Direct replacements within the same family include the MAX9005, which shares identical electrical characteristics and pinout but lacks the internal reference. Ensure that any substitute maintains the 8-pin µMAX package and supports the required +2.5V to +5.5V operating voltage range.