LM4132CMFX-4.1/NOPB

Voltage Reference Overview

The LM4132CMFX-4.1/NOPB is a precision series voltage reference manufactured by Texas Instruments, formerly National Semiconductor. It provides a fixed output of 4.096 V with an initial accuracy of ±0.2%. The device operates within a temperature range of -40°C to +125°C and features a maximum shunt current of 20 mA. It utilizes a SOT-23-5 package and supports shutdown functionality.

Voltage Reference Feature Summary

• Provides a stable fixed output voltage for high-precision applications
• Includes shutdown enable capability for power management
• Operates in extreme temperature environments up to 125°C

Voltage Reference Applications

• Data acquisition systems requiring precise voltage references
• Portable instrumentation circuits
• Battery-powered measurement devices

Voltage Reference Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the specific suffix indicates lead-free (NOPB) compliance and tape-and-reel packaging. Ensure the part number matches the exact output voltage and tolerance requirements for your design specifications before procurement.

Voltage Reference Selection Notes

Select this component when a fixed 4.096 V reference with ±0.2% accuracy is required in a compact SOT-23-5 package. Consider the 20 mA maximum shunt current limit and the need for shutdown control. Evaluate thermal performance within the specified -40°C to +125°C operating range for your application environment.

Voltage Reference Part Context

This component belongs to the LM4132 family of precision low-dropout voltage references. It is designed for applications demanding high accuracy and stability in small form factors. The device integrates a bandgap reference core with output buffering to drive loads efficiently while maintaining low noise characteristics suitable for sensitive analog circuits.

Voltage Reference Replacement Considerations

Public confirmed substitute part numbers include LM4132AIMFX-4.1/NOPB and LM4132BIMFX-4.1/NOPB. These variants offer different accuracy grades but maintain the same pinout and functionality. Verify compatibility with existing board layouts and thermal constraints when substituting.