LM4140CCM-4.1

Voltage Reference Overview

The LM4140CCM-4.1 is a micropower low-dropout series voltage reference manufactured by Texas Instruments, designed to provide a stable 4.1V output. It features an initial accuracy of 0.1% and a temperature coefficient of 3 ppm/°C, ensuring high precision across varying conditions. The device operates within a supply voltage range up to 5.6V and draws a typical quiescent current of 230 uA. It is housed in an SOIC-8 surface-mount package and supports an operating temperature range from 0°C to +70°C.

Voltage Reference Feature Summary

• Micropower operation with low quiescent current consumption for energy efficiency
• Low dropout capability allowing operation with minimal input-to-output voltage difference
• High precision performance with 0.1% initial accuracy and 3 ppm/°C temperature coefficient
• Integrated enable pin for power management control

Voltage Reference Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered systems where low current draw is critical
• Data acquisition systems needing stable analog references
• Medical equipment requiring high accuracy signal conditioning

Voltage Reference Procurement Notes

Verify the specific suffix codes against official Texas Instruments documentation to confirm package type, accuracy grade, and temperature range. Ensure the ordering part number matches the required specifications for initial accuracy and temperature coefficient. Cross-reference with the latest datasheet to confirm availability status and any recent product changes or obsolescence notices before finalizing procurement.

Voltage Reference Selection Notes

Select this component when a fixed 4.1V reference with high precision (0.1%) and low temperature drift (3 ppm/°C) is required. It is suitable for applications demanding low power consumption and low dropout voltage. Compare with the shunt-type LM4040 series if a different topology is preferred. Ensure the SOIC-8 package fits the PCB layout constraints and that the operating temperature range meets the system requirements.

Voltage Reference Part Context

The LM4140 belongs to Texas Instruments' family of micropower precision voltage references. Unlike the shunt-based LM4040, the LM4140 is a series regulator-style reference with an enable pin. This configuration allows for lower current consumption and better noise performance in certain applications. The CCM variant specifically denotes the commercial temperature range and SOIC-8 package.

Voltage Reference Replacement Considerations

LM4140CCMX-4.1/NOPB: Same functional specifications with reel packaging instead of tube.