LM4140BCMX-1.0

Voltage Reference Overview

The LM4140BCMX-1.0 is a precision micropower low-dropout series voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.024 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. Designed for surface-mount applications, it is housed in an 8-pin SOIC package and functions reliably across a commercial temperature range from 0°C to +70°C.

Voltage Reference Feature Summary

• Integrates an enable pin for power management control
• Delivers high precision with low temperature drift characteristics
• Features micropower operation suitable for battery-powered systems

Voltage Reference Applications

• Portable instrumentation requiring stable reference voltages
• Data acquisition systems needing precise analog references
• Battery-operated equipment utilizing low-power components

Voltage Reference Procurement Notes

Verify the specific suffix designation against official datasheets to confirm package type and temperature grade. Ensure compatibility with existing board layouts regarding the SOIC-8 footprint. Confirm availability status as distribution channels may vary for specific revision codes.

Voltage Reference Selection Notes

Select this component when a fixed 1.024 V reference with high accuracy is required in space-constrained designs. The integrated enable feature allows for system-level power optimization. Consider the thermal performance within the specified operating range during circuit design.

Voltage Reference Part Context

This part belongs to the LM4140 family of precision voltage references. It shares architectural similarities with other variants in the series but differs in output voltage and packaging options. The family is designed for applications demanding stability and low power consumption in compact form factors.

Voltage Reference Replacement Considerations

LM4140BCM-1.0/NOPB is a documented equivalent variant within the same product line offering identical electrical specifications.