LM4140BCM-4.1

Voltage Reference Overview

The LM4140BCM-4.1 is a precision micropower low-dropout series voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 4.096 V with an initial accuracy of 0.1% and a temperature coefficient of 6 PPM/°C. The device operates within a maximum input voltage of 5.6 V and supports a maximum shunt current of 8 mA. It functions reliably across a temperature range from 0°C to +70°C. The component is housed in an SOIC-Narrow-8 package, suitable for surface mount applications.

Voltage Reference Feature Summary

• Precision micropower low-dropout series voltage reference design
• High initial accuracy of 0.1% for stable reference performance
• Low temperature coefficient of 6 PPM/°C ensuring thermal stability
• Integrated enable pin functionality for power management

Voltage Reference Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered systems utilizing low dropout characteristics
• Data acquisition systems needing high accuracy references
• Industrial process control circuits

Voltage Reference Procurement Notes

Verify the specific suffix configuration against official datasheets to ensure compatibility with required operating temperatures and accuracy grades. Confirm RoHS compliance status as indicated in manufacturer documentation. Check for obsolete status or lifecycle changes before finalizing procurement plans. Ensure the SOIC-8 package footprint matches the target PCB layout requirements.

Voltage Reference Selection Notes

Select this component when a fixed 4.096 V reference with 0.1% accuracy is required in an 8-pin surface mount package. It is suitable for applications demanding low quiescent current and high thermal stability within the commercial temperature range. Consider the 5.6 V maximum input voltage limit during circuit design. Verify that the 6 PPM/°C temperature coefficient meets the system's precision requirements.

Voltage Reference Part Context

The LM4140BCM-4.1 belongs to the LM4140 family of precision micropower low-dropout voltage references. This series offers various fixed output voltages and accuracy grades. The BCM variant specifically denotes the SOIC-8 narrow package and commercial temperature range operation. It serves as a high-precision alternative to standard zener diodes in sensitive analog circuits.

Voltage Reference Replacement Considerations

LM4140BCM-4.1/NOPB is a verified lead-free replacement part number within the same product family.