LM4140CCMX-4.1

Voltage Reference Overview

The LM4140CCMX-4.1 is a micropower low-dropout series voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 4.1 V with an initial accuracy of 0.1% and a temperature coefficient of 3 ppm/°C. The device operates within a supply voltage range up to 5.6 V and draws a typical quiescent current of 230 µA. It is housed in an 8-pin SOIC package and functions reliably across an operating temperature range from 0°C to +70°C.

Voltage Reference Feature Summary

• Micropower operation with low quiescent current consumption
• Low dropout performance for efficient regulation
• High precision with 0.1% initial accuracy
• Excellent thermal stability with 3 ppm/°C temperature coefficient

Voltage Reference Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered measurement systems
• Data acquisition systems needing stable reference voltages
• Medical equipment with strict accuracy requirements

Voltage Reference Procurement Notes

Verify the specific suffix 'G4' or 'NOPB' when ordering, as these indicate lead-free and RoHS-compliant versions which are standard for current production. Confirm the package type matches your PCB footprint design. Ensure the operating temperature range meets your application's environmental conditions. Check for any recent product change notifications regarding marking or packaging updates.

Voltage Reference Selection Notes

Select this component when high precision and low power consumption are critical. The 0.1% accuracy suits applications demanding tight tolerance. The 3 ppm/°C coefficient ensures stability over temperature variations. Consider the 8 mA maximum shunt current limit for load driving capabilities. Compare with the LM4140BCM variant if lower temperature coefficients are required.

Voltage Reference Part Context

This part belongs to the LM4140 family of precision micropower shunt voltage references. It serves as a stable reference source for analog-to-digital converters and other sensitive circuits. The series offers various output voltages and packages to accommodate different design constraints while maintaining consistent performance characteristics across the product line.

Voltage Reference Replacement Considerations

LM4140CCMX-4.1/NOPB is the direct lead-free equivalent. LM4140CCMX-4.1/G4 is another compliant variant. For higher precision, consider LM4140BCM variants. Verify pin compatibility and thermal performance before substitution.