LM4132CMFX-4.1

Voltage Reference Overview

The LM4132CMFX-4.1/NOPB is a precision series voltage reference manufactured by Texas Instruments, housed in a SOT-23-5 package. It provides a nominal output voltage of 4.096 V with an initial accuracy of ±0.2%. The device operates within a junction temperature range of -40°C to +125°C and features a maximum supply current of 60 µA (100 µA max over temperature). It supports a maximum load current of 20 mA and includes an enable pin for shutdown mode. The input voltage range extends from VREF + 400 mV up to 5.5 V.

Voltage Reference Feature Summary

• EEPROM-based curvature correction for high precision
• Low dropout operation without external buffer amplifiers
• Enable pin for low-power shutdown control

Voltage Reference Applications

• Data acquisition systems
• Portable battery-powered equipment
• Precision regulators

Voltage Reference Procurement Notes

Verify the specific suffix 'F' indicates tape-and-reel packaging and 'NOPB' denotes lead-free/RoHS compliance. Confirm the '-4.1' designation corresponds to the 4.096 V output variant. Ensure the C grade matches the required 0.2% initial accuracy specification for your design constraints.

Voltage Reference Selection Notes

Select this component when space-constrained designs require a CMOS-based reference with EEPROM trimming. It is suitable for applications needing low quiescent current and high accuracy without the complexity of shunt references or external buffering components.

Voltage Reference Part Context

This part belongs to the LM4132 family of precision low-dropout voltage references. The family utilizes CMOS technology with EEPROM registers to correct curvature and temperature coefficient, overcoming assembly shifts common in laser-trimmed bipolar references.

Voltage Reference Replacement Considerations

LM4132BMFX-4.1/NOPB

Voltage Reference FAQ

Does the LM4132CMFX-4.1 require an output capacitor?

No, the LM4132 is stable with low-ESR ceramic capacitors and does not strictly require an output capacitor or buffer amplifier for operation.

What is the function of the EN pin?

The EN (Enable) pin allows the device to be shut down, reducing the supply current to approximately 3 µA when driven low.