MAX9050AEUK+T

Overview

The MAX9050AEUK+T is a micropower, single-supply analog comparator integrated with a precision voltage reference. It operates on a supply voltage range of 2.7V to 5.5V and consumes only 40μA of quiescent supply current. The device features rail-to-rail inputs and outputs, with an input common-mode voltage range extending 250mV beyond the supply rails. It provides a fixed 2.500V reference output with A-grade initial accuracy of ±0.4% and a temperature coefficient of 6ppm/°C. The comparator exhibits a propagation delay of 400ns and includes internal hysteresis for clean switching.

Feature Summary

• Integrates a low-power comparator with a precision voltage reference in a compact SOT23-5 package
• Features rail-to-rail inputs and push-pull outputs capable of sourcing and sinking up to 8mA
• Includes internal hysteresis to ensure stable output transitions with slow-moving signals
• Designed to minimize supply current surges during switching to prevent power supply glitches

Applications

• Precision battery management systems
• Window comparator circuits
• Infrared (IR) receivers
• Level translators
• Digital line receivers

Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature range capability (-40°C to +125°C), which differs from the standard commercial grade (-40°C to +85°C). Confirm the 'A' grade designation ensures the tighter 0.4% initial accuracy and 6ppm/°C temperature coefficient specifications required for high-precision applications. Ensure the UCSP/SOT23 footprint matches the target PCB layout constraints.

Selection Notes

Select this component when a system requires both signal comparison and a stable voltage reference within a limited board area. The 40μA supply current makes it suitable for battery-operated devices where power conservation is critical. The rail-to-rail input capability allows operation even when input signals approach the supply rails, while the unique output stage design reduces noise coupling into the power supply network.

Part Context

This part belongs to the MAX9038–MAX9053 family of micropower comparators with integrated references. While similar parts like the MAX9040 offer a 2.048V reference, the MAX9050 specifically provides a 2.500V reference output. The family shares common architectural features such as low bias current and rail-to-rail operation, but varies in reference voltage, channel count, and package options to suit different integration needs.

Replacement Considerations

The MAX9050BEUK+T serves as a direct functional substitute with B-grade reference accuracy (1% initial accuracy, 100ppm/°C tempco). Other family members like the MAX9051 share the same 2.500V reference but leave the inverting input uncommitted rather than connecting it to the reference.