LM4050CIM3X-5.0/NOPB

Voltage Reference Overview

The LM4050CIM3X-5.0/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments, formerly National Semiconductor. It provides a fixed output of 5V with an initial accuracy of ±0.5% and a temperature coefficient of 50ppm/°C. The device operates within a current range of 60µA to 15mA and features low dynamic impedance. It is housed in a surface-mount SOT-23-3 package and supports an operating temperature range from -40°C to +125°C.

Voltage Reference Feature Summary

• Provides stable voltage reference without requiring external stabilizing capacitors for stability.
• Maintains accuracy over wide operating currents and temperatures due to low dynamic impedance.
• Designed for space-critical applications using compact surface-mount packaging.

Voltage Reference Applications

• Portable instrumentation
• Battery-powered systems
• Data acquisition systems

Voltage Reference Procurement Notes

Verify the manufacturer origin carefully as this part originates from the National Semiconductor lineage now under Texas Instruments. Confirm the specific suffix 'CIM3X' matches the required tolerance and package variant. Check current production status as older NMSE parts may be discontinued or superseded by newer NOPB revisions.

Voltage Reference Selection Notes

Select this component when a fixed 5V reference with 0.5% accuracy is required in a small footprint. Ensure the application current stays within the 60µA to 15mA operational window. Consider the 50ppm/°C drift if high thermal stability is critical compared to lower TC alternatives.

Voltage Reference Part Context

This device belongs to the LM4050 family of precision shunt references. It shares characteristics with other variants like the LM4040 but offers improved accuracy and temperature performance. The CIM3X designation indicates a specific tolerance grade and SOT-23 package configuration within the broader product line.

Voltage Reference Replacement Considerations

Direct substitutes include LM4050CEM3X-5.0/NOPB or LM4050BIM3X-5.0/NOPB depending on required accuracy grades. Verify pin compatibility and thermal specifications before swapping.