LM4132DMFX-3.3/NOPB

Voltage Reference Overview

The LM4132DMFX-3.3/NOPB is a precision series voltage reference manufactured by Texas Instruments, housed in a compact SOT-23-5 surface-mount package. It provides a fixed nominal output voltage of 3.3 V with an initial accuracy tolerance of ±0.4%. The device operates within an input voltage range of 3.7 V to 5.5 V and supports a maximum shunt current of 20 mA. It features a temperature coefficient of 20 ppm/°C and maintains functionality across an extended industrial temperature range from -40°C to +125°C.

Voltage Reference Feature Summary

• Delivers high-precision voltage regulation with tight initial accuracy tolerances for sensitive analog circuits.
• Incorporates a shutdown enable feature to minimize power consumption during inactive periods.
• Utilizes a low-dropout architecture allowing stable operation with minimal input-to-output voltage differential.
• Provides low noise performance suitable for high-resolution data acquisition and signal conditioning applications.

Voltage Reference Applications

• Portable battery-powered instrumentation requiring low quiescent current.
• Data acquisition systems utilizing high-resolution analog-to-digital converters.
• Industrial process control loops demanding stable reference voltages over wide temperature ranges.
• Medical equipment requiring precise voltage regulation for sensor interfaces.

Voltage Reference Procurement Notes

Verify the specific suffix 'DMF' against the official Texas Instruments datasheet to confirm the exact accuracy grade and package variant. Ensure the ordering part number matches the required initial accuracy and temperature coefficient specifications for your design. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity before procurement.

Voltage Reference Selection Notes

Select this component when a fixed 3.3 V reference with ±0.4% accuracy is required in a small SOT-23-5 footprint. Consider the 20 ppm/°C temperature coefficient for applications experiencing significant thermal variations. Evaluate the 20 mA maximum output current against load requirements to ensure adequate drive capability without exceeding device limits.

Voltage Reference Part Context

This device belongs to the LM4132 family of precision series voltage references from Texas Instruments. The family offers various output voltages and accuracy grades, all sharing a common low-power, low-noise architecture. The LM4132 series is designed to replace older zener-based references, providing superior stability and lower temperature drift in compact surface-mount packages.

Voltage Reference Replacement Considerations

LM4132EMFX-3.3/NOPB: Offers similar functionality but with ±0.5% initial accuracy instead of ±0.4%.

Voltage Reference FAQ

What is the maximum shunt current for the LM4132DMFX-3.3/NOPB?

The maximum shunt current is 20 mA, which defines the upper limit for load current handling.

Does the LM4132DMFX-3.3/NOPB support shutdown mode?

Yes, the device includes a shutdown enable pin to reduce supply current when the reference is not in use.