LM4040CEM3-2.5

Overview

The LM4040CEM3-2.5 is a micropower shunt voltage reference from Texas Instruments, housed in a surface-mount SOT-23 package. It provides a fixed output voltage of 2.5 V with an initial accuracy of 0.5%. The device features a temperature coefficient of 150 ppm/°C and supports a maximum shunt current of 15 mA. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Provides stable precision voltage reference performance in a compact form factor
• Designed for low power consumption applications through micropower operation
• Utilizes shunt topology for simple circuit integration

Applications

• Portable battery-powered instrumentation
• Data acquisition systems requiring stable reference voltages
• Handheld meters and test equipment

Procurement Notes

Verify the specific suffix and tape-and-reel packaging configuration when ordering. Confirm RoHS compliance status as historical data indicates potential variations. Ensure the supplier source matches the manufacturer's official distribution channels to guarantee component authenticity and traceability.

Selection Notes

Select this component when a fixed 2.5 V reference is required in a small SOT-23 footprint. Consider the 0.5% initial accuracy and 150 ppm/°C temperature coefficient against application tolerance requirements. Evaluate the micropower characteristics for battery-operated designs where current efficiency is critical.

Part Context

This part belongs to the LM4040-N series of precision micropower shunt voltage references. The series offers various fixed voltage options and accuracy grades. The EM3 designation indicates the SOT-23 surface-mount package variant, distinguishing it from through-hole or other package styles within the same functional family.

Replacement Considerations

LM4040CEM3-5.0/NOPB is listed as an alternate product by the manufacturer.