LM4132DMFX-4.1

Voltage Reference Overview

The LM4132DMFX-4.1/NOPB is a precision series voltage reference from Texas Instruments, providing a fixed output of 4.096 V. It features an initial accuracy of ±0.4% and a temperature coefficient of 20 ppm/°C across the -40°C to +125°C operating range. The device operates with a supply current of 60 µA and supports up to 20 mA load current. It utilizes a SOT-23 (5-pin) package and includes an enable pin for shutdown mode.

Voltage Reference Feature Summary

• EEPROM-based curvature correction for high precision
• Low dropout operation without external buffer amplifiers
• Shutdown capability via dedicated enable pin

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix 'F' indicates tape-and-reel packaging and 'NOPB' confirms lead-free status. Confirm the 'D' grade designation matches the required 0.4% accuracy specification. Ensure the datasheet revision aligns with your design requirements.

Voltage Reference Selection Notes

Select this component when space-constrained designs require a CMOS-based reference with EEPROM trimming. It is suitable for applications needing low quiescent current and high stability without the complexity of shunt references or external buffering components.

Voltage Reference Part Context

This part belongs to the LM4132 family of precision voltage references. The family offers various grades (A through E) and voltage options ranging from 1.8 V to 4.096 V. The LM4132 is designed as a cost-effective alternative to laser-trimmed bipolar references in CMOS technology.

Voltage Reference Replacement Considerations

LM4132AMFX-4.1/NOPB

Voltage Reference FAQ

Does the LM4132 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?

Pin 3 is the Enable (EN) input. Driving it low activates the shutdown mode, reducing supply current to approximately 3 µA.