LM4140CCMX-1.0/NOPB datasheet by Texas Instruments

LM4140CCMX-1.0/NOPB Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of the LM4140?
  Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general best practices for voltage reference layouts, such as keeping the input and output traces short and separate, and using a solid ground plane to reduce noise.
• How do I ensure the accuracy of the LM4140 over temperature?
  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, calibration and trimming may be necessary to achieve high accuracy over temperature.
• Can I use the LM4140 as a voltage regulator?
  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 or provide a stable output voltage under varying input conditions.
• What is the maximum input voltage that can be applied to the LM4140?
  The maximum input voltage for the LM4140 is 12.6V, but it's recommended to operate the device within the recommended operating conditions to ensure accuracy and reliability.
• How do I handle ESD protection for the LM4140?
  The LM4140 has built-in ESD protection, but it's still important to follow proper handling and assembly procedures to prevent ESD damage. Additionally, consider adding external ESD protection devices, such as TVS diodes, to further protect the device.