MAX9043AEUB+T

Overview

The MAX9043AEUB+T is a micropower, single-supply analog comparator integrated with a precision voltage reference. It operates within a supply voltage range of 2.5V to 5.5V and consumes only 55µA of quiescent current. The device features dual comparators with rail-to-rail inputs and outputs, capable of sinking and sourcing up to 8mA. It includes an internal ±3mV hysteresis mechanism and utilizes a proprietary curvature-correction circuit for the reference output, which provides a fixed 2.048V output with A-grade initial accuracy of 0.4%.

Feature Summary

• Integrates dual comparators with a precision voltage reference in a compact package
• Features rail-to-rail input and output stages with high drive capability
• Includes internal hysteresis to ensure clean switching on slow-moving signals
• Utilizes unique output stage design to minimize 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 ordering. Confirm that the 'A' grade designation corresponds to the required 0.4% initial accuracy and low temperature coefficient specifications. Ensure the UCSP/SOT23 footprint matches the target PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when system design requires both signal comparison and a stable reference voltage within a limited board area. The low supply current makes it suitable for battery-operated applications where power conservation is critical. Verify that the 400ns propagation delay meets the timing requirements of the intended digital interface or control loop.

Part Context

This part belongs to the MAX9038–MAX9043 family of micropower comparators and references manufactured by Analog Devices/Maxim Integrated. These devices are designed for low-voltage, single-supply operation. The MAX9043 specifically combines two comparators with a 2.048V reference, offering a solution for multi-channel monitoring tasks without requiring external reference components.

Replacement Considerations

Direct substitutes include other members of the MAX9038–MAX9043 series, such as the MAX9042, provided the pinout and comparator count align with the design requirements. Cross-reference the specific package type and electrical grades to ensure functional compatibility.