LM4132CMF-4.1

Voltage Reference Overview

The LM4132CMF-4.1/NOPB is a precision series voltage reference manufactured by Texas Instruments, featuring a nominal output voltage of 4.096 V. It provides an initial accuracy of ±0.2% and operates within a temperature coefficient range of 20 ppm/°C across the full industrial temperature range of -40°C to +125°C. The device requires a maximum input supply voltage of 5.5 V and delivers up to 20 mA of load current with a typical quiescent current of 60 µA. It utilizes a SOT-23 (DBV) five-pin package.

Voltage Reference Feature Summary

• EEPROM-based laser trimming for high accuracy and low temperature drift
• Integrated enable pin for ultra-low power shutdown mode
• Capacitor-free stability with low dropout performance

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free and RoHS compliance status. Confirm the 'C' grade designation corresponds to the required 0.2% initial accuracy specification. Ensure the 'MF' suffix matches the required SOT-23 surface-mount package variant for your PCB layout.

Voltage Reference Selection Notes

Select this component when a fixed 4.096 V reference is needed with moderate precision requirements. The C-grade offers a balance between cost and performance compared to higher grades. Consider the 20 mA output capability if driving moderate loads without external buffering.

Voltage Reference Part Context

This part belongs to the LM4132 family of CMOS band-gap voltage references. The family includes various voltage options and accuracy grades (A through E). The LM4132 design uses EEPROM registers to correct curvature and temperature coefficients, overcoming assembly shifts common in plastic packages.

Voltage Reference Replacement Considerations

LM4132BMFX-4.1/NOPB

Voltage Reference FAQ

Does the LM4132CMF-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 Pin 3 on the LM4132CMF-4.1?

Pin 3 is the Enable (EN) pin. Driving it low activates a shutdown mode that reduces supply current to approximately 3 µA.