LM4140BCMX-1.0/NOPB

Voltage Reference Overview

The LM4140BCMX-1.0/NOPB is a precision micropower low-dropout series voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.024 V with an initial accuracy of 0.1%. The device features a temperature coefficient of 3 ppm/°C, ensuring high stability across operating conditions. It operates within an input voltage range up to 5.6 V and supports a maximum shunt current of 8 mA. The component is designed for surface-mount applications in an 8-SOIC package.

Voltage Reference Feature Summary

• Precision micropower low-dropout series voltage reference design
• High stability with 3 ppm/°C temperature coefficient
• Integrated enable pin for power management control

Voltage Reference Applications

• Portable instrumentation requiring stable reference voltages
• Battery-powered measurement systems
• Data acquisition systems with high accuracy requirements

Voltage Reference Procurement Notes

Verify the specific suffix 'NOPB' indicates non-lead (Pb-free) compliance as per manufacturer specifications. Confirm the 'CMX' suffix corresponds to the tape-and-reel packaging format rather than tube packaging. Ensure the ordering part number matches the exact voltage and tolerance requirements for the target application circuit design.

Voltage Reference Selection Notes

Select this component when a fixed 1.024 V reference with ultra-low drift is required. The low quiescent current makes it suitable for battery-operated devices. Consider the SOIC-8 package constraints and thermal dissipation needs relative to the 8 mA maximum shunt current capability in the final layout design.

Voltage Reference Part Context

This part belongs to the LM4140 family of precision voltage references from Texas Instruments. It shares architectural similarities with other variants in the series but is distinguished by its specific 1.024 V output voltage and 0.1% initial accuracy. The family is characterized by micropower operation and low dropout performance.

Voltage Reference Replacement Considerations

LM4140ACM-1.0/NOPB: Same package and function with potentially different grade or batch specifications.

Voltage Reference FAQ

What is the significance of the NOPB suffix?

The NOPB suffix indicates that the device is lead-free and compliant with RoHS standards.

Does the device include an enable feature?

Yes, the LM4140 series includes an enable pin to control the output state and reduce power consumption.