LM4140ACMX-2.5/NOPB

Voltage Reference Overview

The LM4140ACMX-2.5/NOPB is a precision micropower low-dropout series voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.5 V with an initial accuracy of 0.1%. The device features a temperature coefficient of 3 ppm/°C and operates within a junction temperature range of -40°C to +125°C. It utilizes an SOT-23 package and draws a typical quiescent current of 175 µA. The maximum input voltage is 5.6 V, and the maximum shunt current is 8 mA.

Voltage Reference Feature Summary

• Provides high-precision voltage regulation with 0.1% initial accuracy and low temperature drift.
• Features micropower consumption suitable for battery-operated applications.
• Includes an enable pin for power management control.

Voltage Reference Applications

• Portable instrumentation requiring stable reference voltages
• Battery-powered measurement systems
• Data acquisition systems

Voltage Reference Procurement Notes

Verify that the suffix 'CMX' indicates tape-and-reel packaging rather than tube packaging. Confirm the specific temperature grade matches the design requirements, as commercial grades may differ from industrial specifications. Ensure the component is sourced from authorized distributors to guarantee authenticity and traceability.

Voltage Reference Selection Notes

Select this component when a compact SOT-23 package is required alongside high precision. Compare against the LM4140AIMX variant if a wider operating temperature range beyond standard commercial limits is needed. Consider the LM4040 series if a shunt reference topology is preferred over a series configuration for the same application constraints.

Voltage Reference Part Context

This part belongs to the LM4140 family of precision micropower voltage references. It shares functional similarities with other members like the LM4140ACM-2.5 but differs in packaging format. The family is designed for applications demanding stability and low power consumption in small form factors.

Voltage Reference Replacement Considerations

LM4140AIMX-2.5/NOPB offers a wider temperature range. LM4140ACM-2.5/NOPB is the tube-packaged equivalent. LM4040QDIM3-2.5/NOPB is a shunt alternative in the same package.