LM4140CCMX-1.2/NOPB

Voltage Reference Overview

The LM4140CCMX-1.2/NOPB is a micropower low-dropout series voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.25 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 is housed in an 8-pin SOIC package (SOT-23-5 equivalent footprint for the 'CM' suffix variant, though datasheet specifies SOIC-8 for CCM) and functions reliably across a temperature range of 0°C to +70°C.

Voltage Reference Feature Summary

• Micropower operation designed for battery-powered applications
• Low dropout capability allows operation with minimal input-to-output voltage difference
• High precision performance with tight initial accuracy and low temperature drift
• Integrated enable pin 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 configuration against the official Texas Instruments datasheet to ensure compatibility with required packaging and environmental specifications. Confirm that the NOPB designation aligns with RoHS compliance requirements for your manufacturing process. Cross-reference the exact part number with the manufacturer's latest release notes to account for any potential obsolescence or lifecycle changes.

Voltage Reference Selection Notes

Select this component when a precise 1.25 V reference is needed in a compact surface-mount package. Consider the 3 ppm/°C temperature coefficient for applications requiring stability over moderate temperature variations. Ensure the system design accommodates the 8 mA maximum shunt current limit and the specific thermal characteristics of the SOIC-8 package.

Voltage Reference Part Context

This part belongs to the LM4140 family of precision micropower voltage references from Texas Instruments. The family includes various output voltages and packages, offering flexibility for different design constraints. The LM4140 series is known for its low noise and high long-term stability, making it suitable for demanding analog signal conditioning tasks.

Voltage Reference Replacement Considerations

Direct substitutes include other LM4140 variants with different output voltages or packages, such as LM4140CCM-1.2/NOPB. Verify pinout compatibility and electrical parameters before substitution.

Voltage Reference FAQ

What is the maximum shunt current for the LM4140CCMX-1.2/NOPB?

The maximum shunt current is 8 mA.

Does the LM4140CCMX-1.2/NOPB have an enable pin?

Yes, the LM4140CCMX-1.2/NOPB includes an enable pin for controlling power consumption.