LM4132EMF-4.1

Voltage Reference Overview

The LM4132EMF-4.1 is a precision series voltage reference manufactured by Texas Instruments, featuring an output voltage of 4.096 V with an initial accuracy of ±0.5%. It operates within a junction temperature range of -40°C to +125°C and supports a maximum input supply voltage of 5.5 V. The device delivers up to 20 mA of output current while maintaining a low supply current of 60 µA. It utilizes a CMOS band-gap architecture with EEPROM correction for curvature and temperature coefficient stability.

Voltage Reference Feature Summary

• EEPROM-based package-level programming corrects curvature, temperature coefficient, and accuracy to overcome assembly shifts in plastic packages.
• Capable of delivering up to 20 mA output current without requiring an external output capacitor or buffer amplifier.
• Features an enable pin that allows the device to enter a shutdown mode with significantly reduced supply current.

Voltage Reference Applications

• Instrumentation and process control systems
• Data acquisition systems
• Portable battery-powered equipment
• Precision regulators

Voltage Reference Procurement Notes

Verify the specific suffix 'E' corresponds to the required 0.5% initial accuracy grade and 30 ppm/°C temperature coefficient. Confirm the 'MF' designation matches the SOT-23-5 surface-mount package requirements. Ensure the '-4.1' variant aligns with the 4.096 V output specification for the target circuit design.

Voltage Reference Selection Notes

Select this component when space constraints require a compact SOT-23 package alongside high drive capability. The E-grade offers a balance of cost and performance for applications needing 4.096 V with moderate precision. Consider the low dropout characteristics and enable functionality for power-sensitive designs.

Voltage Reference Part Context

This part belongs to the LM4132 family of precision voltage references from Texas Instruments. The family includes various grades (A through E) offering different accuracy levels and temperature coefficients. The LM4132 is designed as a cost-effective alternative to laser-trimmed bipolar references using advanced CMOS technology.

Voltage Reference Replacement Considerations

LM4132BMFX-4.1/NOPB

Voltage Reference FAQ

Does the LM4132EMF-4.1 require an output capacitor for stability?

No, the device does not require an output capacitor or buffer amplifier to remain stable.

What is the function of the EN pin on the LM4132EMF-4.1?

The EN pin serves as an enable input that allows the device to be shut down, reducing the supply current to approximately 3 µA.