Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general best practices for voltage reference design, such as keeping the input and output traces short and separate, and using a solid ground plane to reduce noise.
To ensure accuracy over temperature, it's essential to follow the recommended operating conditions, including temperature range, and to consider the temperature coefficient of the device. Additionally, using a thermally stable voltage reference, such as the LM4140, and minimizing thermal gradients on the PCB can help to maintain accuracy.
No, the LM4140 is a voltage reference, not a voltage regulator. It's designed to provide a stable voltage reference, but it does not have the capability to regulate voltage. If you need a voltage regulator, you should consider a separate device, such as the LM317 or LM1117.
To protect the LM4140 from overvoltage or reverse voltage, you can use a voltage clamp, such as a zener diode or a transient voltage suppressor (TVS), in conjunction with a series resistor to limit the input voltage. Additionally, following proper PCB design and layout practices, such as using a solid ground plane and keeping input and output traces short, can help to reduce the risk of overvoltage or reverse voltage.
The typical output impedance of the LM4140 is around 0.2 ohms, but this can vary depending on the specific application and operating conditions. It's essential to consider the output impedance when designing your circuit to ensure that it meets your requirements.
Trust Checks
This model has been provided by community users.
Community Provided
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
LM4140CCMX-4.1/NOPB Overview
Use the download button to access the LM4140CCMX-4.1/NOPB schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like LM414,
or try a keyword search, such as Voltage References
About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
