LM4140CCM-2.5

Voltage Reference Overview

The LM4140CCM-2.5/NOPB is a micropower low-dropout series voltage reference manufactured by Texas Instruments, designed for precision applications requiring stable output voltages. It provides a fixed reference voltage of 2.048 V with an initial accuracy of 0.1% and a temperature coefficient of 10 ppm/°C. The device operates within a supply voltage range up to 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 and consumes a typical operating supply current of 230 µA to 265 µA. Packaged in an SOIC-8 surface-mount format, it integrates an enable pin for power management.

Voltage Reference Feature Summary

• Micropower operation with low quiescent current consumption suitable for battery-powered systems
• Low-dropout architecture enabling efficient regulation with minimal input-to-output voltage differential
• Integrated enable pin allowing precise control over device power states and standby modes
• High precision performance characterized by tight initial accuracy and low temperature drift

Voltage Reference Applications

• Portable instrumentation requiring stable reference voltages under varying load conditions
• Data acquisition systems needing high-resolution analog-to-digital conversion references
• Battery-operated equipment where power efficiency and long-term stability are critical
• Industrial process control loops utilizing precision sensing elements

Voltage Reference Procurement Notes

Verify the specific suffix designation (e.g., NOPB) to confirm lead-free compliance and package variant. Ensure the selected part number matches the required output voltage tolerance and thermal specifications for your application environment. Cross-reference official datasheets for pinout configurations and recommended operating conditions before integration into circuit designs.

Voltage Reference Selection Notes

Select this component when a fixed 2.048 V reference with 0.1% accuracy is required in an SOIC-8 package. Consider the 10 ppm/°C temperature coefficient for environments with moderate thermal fluctuations. Evaluate the 8 mA maximum shunt current against load requirements to ensure adequate drive capability without exceeding power dissipation limits.

Voltage Reference Part Context

This device belongs to the LM4140 family of precision micropower voltage references. It shares architectural similarities with other members like the LM4140ACM and LM4140BCM variants, differing primarily in output voltage options and specific accuracy grades. The family is designed to replace older generation references while offering improved power efficiency and compact packaging solutions for modern electronic designs.

Voltage Reference Replacement Considerations

Direct substitutes include LM4140ACM-2.0/NOPB and LM4140BCM-2.0/NOPB for similar performance profiles. Verify compatibility regarding package dimensions and electrical characteristics such as temperature coefficient and initial accuracy when transitioning between different grade variants within the same product line.