LM4132DMFX-2.5/NOPB

Voltage Reference Overview

The LM4132DMFX-2.5/NOPB is a precision series voltage reference manufactured by Texas Instruments, housed in a SOT-23-5 surface-mount package. It provides a fixed output voltage of 2.5 V with an initial accuracy of 0.05% and a temperature coefficient of 30 ppm/°C. The device supports a maximum input voltage of 6 V and a maximum shunt current of 20 mA. It operates within a temperature range of -40°C to +125°C and features a shutdown enable function.

Voltage Reference Feature Summary

• Precision series voltage reference topology
• Integrated shutdown enable functionality
• Low temperature coefficient for stability

Voltage Reference Applications

• Data acquisition systems
• Portable instrumentation
• Battery-powered devices

Voltage Reference Procurement Notes

Verify the specific suffix 'DMFX' against the official datasheet to confirm it denotes the tape-and-reel packaging variant rather than a different electrical specification. Ensure the component matches the required automotive or industrial grade if applicable, as standard commercial grades may differ from qualified versions. Cross-reference the manufacturer part number directly with Texas Instruments documentation to avoid confusion with similar LM4132 variants.

Voltage Reference Selection Notes

Select this component when a compact SOT-23-5 footprint is required alongside high initial accuracy and low drift. The 2.5 V output is suitable for interfacing with ADCs requiring mid-range references. Consider the shutdown feature for power-sensitive applications where reducing quiescent current during idle periods is necessary. Verify that the 20 mA load capability meets the circuit requirements.

Voltage Reference Part Context

This part belongs to the LM4132 family of micropower shunt voltage references. The family offers various fixed output voltages and accuracy grades. The 'D' suffix typically indicates a specific temperature range or qualification level, while 'MFX' specifies the reel packaging format. This series is designed for applications demanding precision in small form factors.

Voltage Reference Replacement Considerations

LM4132AMFX-2.5/NOPB: Commercial grade alternative with similar specifications but potentially different temperature qualification.

Voltage Reference FAQ

What is the purpose of the shutdown pin on the LM4132DMFX-2.5?

The shutdown pin allows the user to disable the reference output, significantly reducing the supply current to minimize power consumption in battery-operated systems.

Does the LM4132DMFX-2.5 require external components for operation?

No external components are required for basic voltage reference operation, though a bypass capacitor is recommended near the input pin for stability.