LM4132BMFX-1.8

Voltage Reference Overview

The LM4132BMFX-1.8 is a precision series voltage reference manufactured by Texas Instruments, housed in an SOT-23-5 surface-mount package. It provides a fixed output voltage of 1.8 V with an initial accuracy of ±0.1% and a temperature coefficient of 20 ppm/°C. The device operates within an input voltage range up to 6 V and supports a maximum shunt current of 20 mA. It functions reliably across an extended temperature range from -40°C to +125°C and consumes a typical quiescent current of 60 µA.

Voltage Reference Feature Summary

• Delivers high-precision fixed voltage output with tight initial accuracy tolerance
• Features low temperature coefficient for stable performance across wide thermal ranges
• Incorporates shutdown enable functionality to minimize power consumption when inactive

Voltage Reference Applications

• Precision analog-to-digital converter (ADC) reference sources
• Digital-to-analog converter (DAC) voltage references
• Battery-powered instrumentation requiring low quiescent current
• Portable measurement devices needing stable reference voltages

Voltage Reference Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free compliance and RoHS adherence as per Texas Instruments documentation. Confirm the 'F' suffix denotes tape-and-reel packaging suitable for automated assembly. Ensure the part number matches the exact 1.8 V output variant required for your circuit design, as other voltage options exist within the same family.

Voltage Reference Selection Notes

Select this component when a compact SOT-23-5 footprint is required alongside high stability. The 20 ppm/°C drift rate suits applications sensitive to thermal variations. Consider the 60 µA operating current for battery life optimization. Verify that the 20 mA load capability meets the downstream circuit requirements without exceeding the maximum shunt current limits defined in the datasheet.

Voltage Reference Part Context

This device belongs to the LM4132 series of precision low-dropout voltage references. The series is characterized by its small form factor and high accuracy, making it suitable for space-constrained designs. The LM4132 family includes various output voltage options and accuracy grades, all sharing similar pinouts and operational characteristics for easy integration into existing systems.

Voltage Reference Replacement Considerations

Direct substitutes include LM4132BMFX-1.8/NOPB for identical specifications. Other LM4132 variants with different output voltages or accuracy grades may serve as functional replacements if electrical parameters align with system requirements.