MAX9051AEUT-T

Overview

The MAX9051AEUT-T is a micropower, single-supply analog comparator integrated with a precision voltage reference. It operates within 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 and includes internal ±3mV hysteresis for clean switching. The propagation delay is typically 400ns at 100mV overdrive.

Feature Summary

• Integrates a low-power comparator with a precision voltage reference in a compact package
• Features rail-to-rail inputs and outputs with extended common-mode voltage range
• Includes internal hysteresis to ensure stable output switching with slow-moving signals
• Utilizes a unique output stage design that minimizes supply current surges during transitions

Applications

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

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing this component. Confirm the 'A' grade designation corresponds to the required initial accuracy and temperature coefficient specifications for your application. Ensure the SOT23-6 package footprint matches your board layout requirements before finalizing procurement.

Selection Notes

Select this part for applications requiring both signal comparison and a stable reference voltage in a minimal footprint. It is suitable for battery-operated systems due to its low supply current consumption. Consider the A grade specifications if tighter initial accuracy and lower temperature coefficients are necessary compared to the B grade alternatives.

Part Context

This component belongs to the MAX9038–MAX9053 family of micropower comparators and references. It shares architectural similarities with other members like the MAX9050 and MAX9052 but differs in channel count and reference voltage settings. The MAX9051 specifically offers a single comparator configuration with a 2.500V reference output.

Replacement Considerations

The MAX9051BEUT-T serves as a direct functional replacement with different accuracy grades. Other family members such as the MAX9050 or MAX9052 may be considered if reference voltage or channel count differences are acceptable.