LM4140CCMX-4.1/NOPB

Voltage Reference Overview

The LM4140CCMX-4.1/NOPB is a micropower low-dropout series voltage reference manufactured by Texas Instruments, housed in an SOIC-8 surface-mount package. It provides a fixed output voltage of 4.096 V with an initial accuracy of 0.1% and a temperature coefficient of 10 ppm/°C. The device operates within an input voltage range up to 5.6 V and supports a maximum shunt current of 8 mA. It functions reliably across a commercial temperature range from 0°C to +70°C, drawing a typical operating supply current between 230 µA and 265 µA.

Voltage Reference Feature Summary

• Micropower operation with low quiescent current consumption suitable for battery-powered applications
• High precision performance featuring 0.1% initial accuracy and low temperature drift
• Low dropout regulator architecture enabling stable regulation with minimal input-to-output voltage differential

Voltage Reference Applications

• Precision analog-to-digital converter (ADC) reference sources
• Digital-to-analog converter (DAC) voltage references
• Portable instrumentation requiring stable voltage benchmarks
• Data acquisition systems needing high accuracy references

Voltage Reference Procurement Notes

Verify the complete part number including the suffix /NOPB to ensure lead-free compliance and specific tape-and-reel packaging configuration. Confirm that the SOIC-8 footprint matches your PCB design constraints. Ensure the operating environment remains within the specified 0°C to +70°C commercial temperature range for guaranteed performance parameters.

Voltage Reference Selection Notes

Select this component when a fixed 4.096 V reference is required with tight tolerance specifications. The SOIC-8 package offers a balance between thermal performance and board space efficiency compared to smaller packages. Consider the 8 mA maximum shunt current limit when designing the biasing network to ensure adequate load regulation without exceeding device limits.

Voltage Reference Part Context

This device belongs to the LM4140 family of precision micropower voltage references. The family includes various output voltages and package options, such as the LM4140BCM variants. The LM4140 series is designed to replace older discrete reference solutions, offering integrated low-dropout regulation in a compact form factor for modern electronic designs.

Voltage Reference Replacement Considerations

Direct pin-compatible substitutes within the same family include LM4140CCM-4.1/NOPB (tube packaging) or LM4140ACMX-4.1/NOPB if higher temperature coefficients are acceptable. Verify that alternative parts match the 4.096 V output and SOIC-8 package dimensions before integration.