LM4140CCMX-2.5

Voltage Reference Overview

The LM4140CCMX-2.5 is a micropower low-dropout series voltage reference manufactured by Texas Instruments, housed in an SOT-23 package. It provides a fixed output voltage of 2.5 V with an initial accuracy of 0.1%. The device features a temperature coefficient of 6 ppm/°C and operates within a junction temperature range of -40°C to +125°C. Maximum shunt current is 8 mA, with a maximum input voltage of 5.6 V. Quiescent current ranges from 175 µA to 265 µA.

Voltage Reference Feature Summary

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

Voltage Reference Applications

• Portable instrumentation requiring stable reference voltages
• Battery-operated measurement systems
• Data acquisition systems
• Precision analog circuits

Voltage Reference Procurement Notes

Verify the specific suffix 'CMX' indicates the SOT-23 package variant distinct from the SOIC-8 version. Confirm the operating temperature grade corresponds to the commercial extended range (-40°C to +125°C) rather than the industrial range found in other variants. Ensure the datasheet matches the exact part number for electrical characteristics.

Voltage Reference Selection Notes

Select this component when a small footprint is required alongside high precision. The SOT-23 package offers space savings compared to larger packages. Verify that the load current requirements do not exceed the maximum shunt current limit. Consider the thermal dissipation capabilities inherent to the small surface-mount package during design.

Voltage Reference Part Context

This part belongs to the LM4140 family of precision micropower voltage references. It shares core architectural features with other members like the LM4140AIM3-2.5 but differs in packaging and potentially temperature grading. The family is designed for applications demanding high accuracy in compact form factors.

Voltage Reference Replacement Considerations

• LM4140AIM3-2.5/NOPB
• LM4140CIM3-2.5/NOPB

Voltage Reference FAQ

What is the difference between the LM4140CCMX-2.5 and the LM4140CCM-2.5?

The primary difference is the package type. The LM4140CCMX-2.5 uses an SOT-23 package, while the LM4140CCM-2.5 typically refers to the SOIC-8 package variant.

Does the LM4140CCMX-2.5 include an enable pin?

Yes, the LM4140CCMX-2.5 includes an enable pin to control power consumption.