LM4132CMFX-2.5

Voltage Reference Overview

The LM4132CMFX-2.5/NOPB is a precision low dropout voltage reference manufactured by Texas Instruments, featuring a fixed 2.5 V output. It utilizes EEPROM registers for curvature correction within a CMOS band-gap architecture to achieve high accuracy and stability. The device operates with a supply current of 60 µA and supports an input voltage range from VREF + 400 mV up to 5.5 V. It provides an initial voltage accuracy of ±0.2% and a temperature coefficient of 20 ppm/°C across the -40°C to +125°C ambient operating temperature range.

Voltage Reference Feature Summary

• EEPROM-based package-level programming corrects curvature, temperature coefficient, and accuracy on a CMOS band-gap architecture.
• Integrated enable pin allows switching to a low-power shutdown mode with minimal supply current consumption.
• Capable of delivering up to 20 mA of output current without requiring an external output capacitor or buffer amplifier.

Voltage Reference Applications

• Instrumentation and Process Control
• Data Acquisition Systems
• Portable Battery-Powered Equipment

Voltage Reference Procurement Notes

Verify the specific suffix 'CMFX' against official documentation to confirm the exact grade (C), voltage (2.5 V), and tape-and-reel packaging configuration. Ensure compatibility with the required automotive qualification standards if applicable to the design environment.

Voltage Reference Selection Notes

Select this component when a compact SOT-23 footprint is required alongside high precision and low quiescent current. The C-grade specification offers a balance between tight accuracy and cost-effectiveness for general-purpose applications.

Voltage Reference Part Context

This part belongs to the LM4132 family of precision voltage references designed for space-critical applications. The family includes various voltage options and grades (A through E) to provide flexibility in balancing performance specifications against manufacturing costs.

Voltage Reference Replacement Considerations

LM4132EMFX-2.5/NOPB

Voltage Reference FAQ

Does the LM4132 require an output capacitor for stability?

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

How is the high accuracy achieved in this CMOS device?

Accuracy is maintained through EEPROM registers that perform package-level programming to correct curvature, temperature coefficient, and initial voltage shifts during assembly.