LM4140CCMX-2.5/NOPB

Voltage Reference Overview

The LM4140CCMX-2.5/NOPB is a micropower low-dropout series voltage reference manufactured by Texas Instruments, housed in an 8-SOIC surface-mount package. It provides a fixed output voltage of 2.5 V with an initial accuracy of 0.1% and a temperature coefficient of 3 ppm/°C. The device operates within a junction temperature range of 0°C to +70°C and supports a maximum shunt current of 8 mA. It features a maximum input voltage of 5.6 V and draws a typical quiescent current of 265 µA.

Voltage Reference Feature Summary

• Micropower operation with low quiescent current consumption suitable for battery-powered applications
• Low dropout performance allowing stable regulation with minimal input-to-output voltage differential
• High precision stability characterized by tight initial accuracy and low temperature drift
• Integrated enable pin for power management control

Voltage Reference Applications

• Portable instrumentation requiring precise analog references
• Battery-operated measurement systems
• Data acquisition systems
• Calibration equipment

Voltage Reference Procurement Notes

Verify the specific suffix 'CMX' indicates tape-and-reel packaging distinct from tube variants. Confirm RoHS compliance status as indicated by the NOPB designation. Ensure the operating temperature grade matches the C suffix requirements for commercial applications. Cross-reference the manufacturer part number against official TI documentation to validate availability and revision history before procurement.

Voltage Reference Selection Notes

Select this component when a fixed 2.5 V reference with high precision (0.1%) and low temperature drift (3 ppm/°C) is required. The SOIC-8 package suits surface-mount designs. Consider the 265 µA quiescent current for power budget constraints. Verify that the 5.6 V maximum input voltage meets system supply limits. Compare against other LM4140 variants if different output voltages or packaging formats are needed.

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-2.5 but differs in packaging and specific electrical tolerances defined by the CC suffix. The family is designed for applications demanding stability and low power consumption in compact form factors.

Voltage Reference Replacement Considerations

LM4140ACM-2.5/NOPB offers similar specifications with potentially different temperature coefficients. LM4140BCM-2.5/NOPB provides tighter accuracy grades. Verify pin compatibility and thermal characteristics when substituting.