MAX9043AEUB+

Overview

The MAX9043AEUB+ is a micropower, single-supply comparator and precision voltage reference IC manufactured by Analog Devices Inc./Maxim Integrated. It features dual comparators with rail-to-rail inputs and outputs, consuming only 55µA of supply current. The device includes an internal 2.048V precision voltage reference with A-grade accuracy (±0.4% initial accuracy, 6ppm/°C tempco). Operating from a 2.5V to 5.5V supply, it offers 400ns propagation delay, ±3mV internal hysteresis, and operates within a -40°C to +85°C temperature range in a 10-pin uMAX package.

Feature Summary

• Dual comparators with rail-to-rail input and output stages capable of sourcing and sinking up to 8mA.
• Integrated precision voltage reference providing a stable 2.048V output with low temperature drift.
• Micropower design consuming only 55µA supply current, suitable for battery-operated systems.
• Internal hysteresis ensures clean output switching even with slow-moving input signals.

Applications

• Precision Battery Management
• Window Comparators
• IR Receivers
• Level Translators

Procurement Notes

Verify the specific grade suffix 'A' confirms the 0.4% initial accuracy and 6ppm/°C temperature coefficient specifications. Ensure the 'E' indicates the extended industrial temperature range (-40°C to +85°C) required for your application environment. Confirm the 'UB+' suffix corresponds to the 10-pin uMAX package and lead-free/RoHS compliance status before finalizing procurement orders.

Selection Notes

Select this component when dual independent comparison channels are required alongside a precise voltage reference in a compact footprint. It is suitable for applications demanding low quiescent current and rail-to-rail signal handling. Consider the 400ns propagation delay and ±3mV internal hysteresis for timing-sensitive or noisy signal environments. Verify that the 2.048V reference voltage aligns with system requirements without external scaling.

Part Context

This part belongs to the MAX9038–MAX9043 family of micropower comparators with integrated references. Unlike single-channel variants such as the MAX9040, the MAX9043 provides two comparator channels sharing one precision reference. It shares the same 2.048V reference voltage as the MAX9040 but differs in channel count and package configuration, offering dual functionality in the 10-pin uMAX form factor.

Replacement Considerations

Direct substitutes within the same family include the MAX9043BEUB+ (B-grade reference) or other packages like MAX9043AEUA (uMAX/SO). Cross-family replacements require verifying comparator speed, reference voltage, and package compatibility.