LM4140CCMX-1.2

Voltage Reference Overview

The LM4140CCMX-1.2 is a micropower low-dropout series voltage reference manufactured by Texas Instruments, housed in an 8-pin SOIC package. It provides a fixed output voltage of 1.25 V with an initial accuracy of 0.1% and a temperature coefficient of 3 ppm/°C. The device operates within an input voltage range up to 5.6 V and supports a maximum shunt current of 8 mA. Typical supply current is 230 µA, reducing to less than 1 µA in disable mode. It functions reliably across a temperature range of 0°C to 70°C.

Voltage Reference Feature Summary

• Features ultra-low noise performance for high-precision applications
• Includes an enable pin for power management control
• Offers micropower operation with minimal quiescent current consumption

Voltage Reference Applications

• High-resolution data acquisition systems
• Precision instrumentation circuits
• Battery-powered portable measurement devices

Voltage Reference Procurement Notes

Verify the specific suffix designation against official Texas Instruments documentation to confirm package type and temperature grade. Ensure the ordering part number matches the required accuracy class and thermal specifications for the intended application environment before finalizing procurement.

Voltage Reference Selection Notes

Select this component when a stable 1.25 V reference is required with tight tolerance and low drift characteristics. Consider the enable functionality for power-sensitive designs. Evaluate the SOIC-8 footprint compatibility and ensure the operating temperature range aligns with system requirements.

Voltage Reference Part Context

This device belongs to the LM4140 family of precision micropower voltage references. It serves as a fixed-output alternative within the series, providing a standardized 1.25 V reference point. The family is designed for applications demanding high stability and low power consumption in compact surface-mount packages.

Voltage Reference Replacement Considerations

LM4140CCMX-1.2/NOPB is a verified equivalent variant within the same product line.