LM4140ACM-2.0/NOPB

Voltage Reference Overview

The LM4140ACM-2.0/NOPB is a precision micropower low-dropout voltage reference manufactured by Texas Instruments, housed in an SOIC-8 surface-mount package. It provides a fixed output voltage of 2.048 V with an initial accuracy of 0.1%. The device operates within a temperature range of 0°C to +70°C and features a maximum temperature coefficient of 10 ppm/°C. Electrical specifications include a maximum shunt current of 8 mA, a maximum series input voltage of 5.6 V, and a typical operating supply current ranging from 230 µA to 265 µA.

Voltage Reference Feature Summary

• Delivers high-precision voltage regulation with 0.1% initial accuracy for stable reference applications.
• Features ultra-low power consumption suitable for battery-operated systems with microampere-level current draw.
• Designed as a low-dropout regulator allowing operation with minimal input-to-output voltage differential.

Voltage Reference Applications

• Portable instrumentation requiring precise analog signal processing
• Battery-powered measurement devices needing efficient power management
• Data acquisition systems utilizing high-resolution analog-to-digital converters

Voltage Reference Procurement Notes

Verify the complete part number including the -NOPB suffix to ensure lead-free compliance and specific packaging configuration. Confirm that the SOIC-8 package type matches the target PCB footprint requirements. Ensure the operating temperature range of 0°C to +70°C aligns with the environmental conditions of the intended application before finalizing procurement decisions.

Voltage Reference Selection Notes

Select this component when a fixed 2.048 V reference with tight 0.1% accuracy is required in a compact surface-mount format. It is appropriate for designs prioritizing low quiescent current to extend battery life while maintaining sufficient precision for general-purpose analog circuits. Consider thermal performance within the specified commercial temperature range during system integration.

Voltage Reference Part Context

This device belongs to the LM4140 series of precision micropower voltage references from Texas Instruments. It serves as a three-terminal shunt regulator offering stability comparable to zener diodes but with significantly lower noise and better temperature drift characteristics. The series supports various output voltages and packages to accommodate diverse industrial and consumer electronics design constraints.

Voltage Reference Replacement Considerations

LM4140ACMX-2.0/NOPB