LM4132CMFX-1.8

Voltage Reference Overview

The LM4132CMFX-1.8 is a precision series voltage reference IC manufactured by Texas Instruments, housed in a surface-mount SOT-23-5 package. It provides a fixed output voltage of 1.8 V with an initial accuracy of ±0.2%. The device features a temperature coefficient of 30 ppm/°C and supports a maximum input voltage of 6 V. It operates within a junction current range up to 20 mA and maintains functionality across an extended temperature range from -40°C to +125°C.

Voltage Reference Feature Summary

• Provides stable fixed output voltage suitable for precision analog circuits
• Features low temperature drift characteristics for consistent performance across thermal variations
• Includes shutdown enable capability to minimize power consumption when inactive

Voltage Reference Applications

• Portable instrumentation requiring low power precision references
• Battery-powered measurement systems
• Data acquisition systems needing stable voltage baselines

Voltage Reference Procurement Notes

Verify the complete part number including suffixes such as /NOPB or specific tape-and-reel designations against official Texas Instruments documentation. Confirm that the ordering code matches the required package style and shipping configuration. Ensure compatibility with existing PCB footprints and verify RoHS compliance status through the manufacturer's latest release notes before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when a fixed 1.8 V reference with high precision is required in a compact SOT-23-5 footprint. Consider the 30 ppm/°C temperature coefficient and ±0.2% initial accuracy for applications demanding stability over temperature and time. Evaluate the 20 mA maximum shunt current capability against load requirements to ensure adequate drive strength without exceeding specifications.

Voltage Reference Part Context

This device belongs to the LM4132 family of micropower series voltage references designed for space-constrained applications. It shares architectural similarities with other members like the LM4132AMFX and LM4132DMFX variants, differing primarily in output voltage options and specific accuracy grades. The family targets cost-sensitive yet performance-critical markets requiring reliable voltage regulation.

Voltage Reference Replacement Considerations

Direct substitutes include other LM4132 variants with compatible pinouts and similar electrical characteristics, such as the LM4132CMF-3.3/NOPB for different voltage needs. Verify pin compatibility and thermal performance before swapping. Cross-reference with LM4128 series devices if higher current or different accuracy profiles are acceptable.