LM4140CCMX-1.0/NOPB

Voltage Reference Overview

The LM4140CCMX-1.0/NOPB is a micropower low-dropout series voltage reference manufactured by Texas Instruments, housed in an SOIC-8 surface-mount package. It provides a fixed output voltage of 1.024 V with an initial accuracy of 0.1% and a temperature coefficient of 3 ppm/°C. The device operates within an input voltage range up to 5.6 V and supports a maximum shunt current of 8 mA. It functions reliably across a commercial temperature range from 0°C to +70°C, consuming approximately 230 µA to 265 µA of quiescent current.

Voltage Reference Feature Summary

• Features a precision micropower low-dropout architecture for stable regulation.
• Includes an integrated enable pin for power management control.
• Delivers high stability with a low temperature coefficient of 3 ppm/°C.

Voltage Reference Applications

• Precision analog-to-digital converter (ADC) reference sources
• Data acquisition systems requiring stable voltage benchmarks
• Battery-powered instrumentation circuits

Voltage Reference Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free compliance and RoHS status as per the manufacturer's datasheet. Confirm the 'CMX' designation indicates tape-and-reel packaging rather than tube packaging. Ensure the operating temperature range aligns with your system requirements, as this variant is specified for commercial temperatures only.

Voltage Reference Selection Notes

Select this component when a 1.024 V reference is required with tight initial accuracy and low drift. Compare against other LM4140 variants if different output voltages or industrial temperature ranges are needed. Consider the SOIC-8 footprint constraints and ensure the PCB layout supports the low-current operation characteristics defined in the electrical specifications.

Voltage Reference Part Context

This part belongs to the LM4140 family of series voltage references, which are designed for applications demanding high precision and low power consumption. The family includes various output voltage options and package types, such as SOT-23 and SOIC, allowing designers to choose the appropriate form factor while maintaining consistent performance characteristics across the series.

Voltage Reference Replacement Considerations

LM4140CCM-1.0/NOPB serves as a direct equivalent in tube packaging. Other LM4140 variants with different output voltages share the same pinout but require circuit adjustment. Verify that any substitute maintains the 3 ppm/°C temperature coefficient and 0.1% initial accuracy to ensure system performance integrity.