LM4050CEM3-5.0/NOPB

Voltage Reference Overview

The LM4050CEM3-5.0/NOPB is a micropower shunt voltage reference manufactured by Texas Instruments, featuring a fixed output of 5 V with an initial accuracy of ±0.5%. It operates within a temperature range of -40°C to +125°C and exhibits a temperature coefficient of 50 ppm/°C. The device supports a maximum shunt current of 15 mA and draws a typical cathode current of 90 µA. Noise performance is specified at 93 µVrms from 10 Hz to 10 kHz. It is housed in a compact SOT-23-3 surface-mount package.

Voltage Reference Feature Summary

• Provides stable precision voltage referencing through a micropower shunt architecture designed for low quiescent current consumption.
• Ensures high thermal stability across extended industrial temperature ranges with a low temperature coefficient specification.
• Delivers tight initial accuracy tolerance suitable for applications requiring precise analog signal conditioning.

Voltage Reference Applications

• Portable battery-powered instrumentation systems
• Data acquisition and measurement circuits
• Microcontroller power supply monitoring

Voltage Reference Procurement Notes

Verify the specific suffix configuration against the manufacturer datasheet to ensure compatibility with required accuracy grades and operating temperature ranges. Confirm RoHS compliance status and check for any product lifecycle notifications such as NRND or EOL status before finalizing procurement plans.

Voltage Reference Selection Notes

Select this component when a fixed 5 V reference with moderate precision is required in a small footprint. Consider the 90 µA cathode current for battery life calculations and verify that the 15 mA load capability meets the circuit's sink requirements. Ensure the SOT-23-3 package fits the board layout constraints.

Voltage Reference Part Context

This part belongs to the LM4050-N series of precision micropower shunt voltage references. It serves as a cost-effective alternative to higher-performance variants like the LM4040 or LM4050Q, offering standard industrial grade specifications. The NOPB suffix indicates lead-free construction compliant with RoHS directives.

Voltage Reference Replacement Considerations

Direct pin-compatible substitutes include other LM4050 variants with different accuracy grades or output voltages, provided the electrical parameters meet the design requirements. Verify thermal and electrical specifications before substitution.