LM4132EMFX-4.1

Voltage Reference Overview

The LM4132EMFX-4.1 is a precision series voltage reference from Texas Instruments, providing a nominal output of 4.096 V with an initial accuracy of ±0.5%. It operates within a supply voltage range of 4.5 V to 5.5 V and delivers up to 20 mA of load current. The device features a low dropout voltage of 400 mV at maximum load and consumes only 60 µA of quiescent current. It includes an enable pin for a 3 µA shutdown mode and is housed in a compact SOT-23 package.

Voltage Reference Feature Summary

• EEPROM-based laser-trimmed CMOS architecture ensures high stability and accuracy without requiring external buffer amplifiers or output capacitors.
• Integrated enable control allows switching between active operation and ultra-low power shutdown modes.
• Capable of sourcing significant load currents while maintaining stable performance across wide temperature ranges.

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix 'EMFX' against official documentation to confirm the exact grade (E) and packaging details. Ensure the input voltage requirements align with the specified operating conditions before integration into the design.

Voltage Reference Selection Notes

Select this component when space constraints require a small SOT-23 footprint alongside moderate current capabilities. It is suitable for applications needing a fixed reference voltage with better than standard accuracy but lower cost than higher-grade alternatives.

Voltage Reference Part Context

This part belongs to the LM4132 family of precision voltage references. The 'E' designation indicates a specific accuracy grade of ±0.5%, distinguishing it from higher precision variants like the A or B grades within the same product line.

Voltage Reference Replacement Considerations

LM4132BMFX-4.1/NOPB

Voltage Reference FAQ

Does the LM4132EMFX-4.1 require an output capacitor?

No, the device is designed to be stable without an output capacitor or buffer amplifier.

What is the function of the EN pin?

The EN pin serves as an enable control, allowing the device to enter a low-power shutdown mode when driven low.