LM4132EMFX-3.0

Voltage Reference Overview

The LM4132EMFX-3.0/NOPB is a precision series voltage reference manufactured by Texas Instruments, housed in a 5-pin SOT-23 package. It provides a fixed output voltage of 3 V with an initial accuracy of ±0.5% and a temperature coefficient of 30 ppm/°C. The device operates within a junction temperature range of -40°C to +125°C and supports a maximum load current of 20 mA. It features a low supply current of 60 µA and includes an enable pin for a 3 µA shutdown mode. The input voltage range extends from VREF + 400 mV up to 5.5 V.

Voltage Reference Feature Summary

• CMOS band-gap architecture utilizing EEPROM registers for curvature correction and package-level programming to maintain high accuracy.
• Integrated enable pin allows switching between active operation and a low-power shutdown mode.
• Capable of delivering up to 20 mA of output current without requiring an external buffer amplifier or output capacitor.

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix 'X' indicates tape-and-reel packaging when ordering. Confirm that the 'E' grade designation corresponds to the required 0.5% accuracy and 30 ppm/°C temperature coefficient specifications for your design. Ensure the NOPB suffix confirms compliance with RoHS standards and absence of lead.

Voltage Reference Selection Notes

Select this component when space-constrained designs require a series reference with moderate precision. The E-grade variant offers a balance of cost and performance suitable for general instrumentation. Consider the 3 V output level against system requirements and verify that the 20 mA drive capability meets the load demands without external buffering.

Voltage Reference Part Context

This part belongs to the LM4132 family of precision voltage references designed for cost-effective CMOS applications. The family spans multiple voltage options and accuracy grades (A through E). The LM4132EMF-3.0/NOPB specifically represents the E-grade version with a 3 V output, distinguishing it from higher-precision A-grade counterparts like the LM4132AMFX-3.0.

Voltage Reference Replacement Considerations

LM4132EMF-3.0/NOPB

Voltage Reference FAQ

Does the LM4132EMFX-3.0 require an output capacitor for stability?

No, the device 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 on the LM4132EMFX-3.0?

The EN pin serves as an enable control. Driving it low activates a shutdown mode with a typical supply current of 3 µA, while driving it high enables normal operation.