LTC1144IS8 datasheet by Linear Technology

LTC1144IS8 Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the LTC1144IS8?
  The maximum input voltage that can be applied to the LTC1144IS8 is 5.5V, which is the absolute maximum rating. However, the recommended operating input voltage range is 2.7V to 5.5V.
• How do I ensure the LTC1144IS8 is in a low-power state?
  To ensure the LTC1144IS8 is in a low-power state, the SHDN pin should be pulled low. This will put the device in shutdown mode, reducing the quiescent current to less than 1μA.
• What is the purpose of the NOISE RED pin on the LTC1144IS8?
  The NOISE RED pin is used to reduce noise on the output of the LTC1144IS8. Connecting this pin to a capacitor to ground can help filter out high-frequency noise and improve the overall noise performance of the device.
• Can I use the LTC1144IS8 as a voltage regulator?
  While the LTC1144IS8 is a low-dropout linear regulator, it is not intended for use as a voltage regulator. It is designed to provide a stable reference voltage, and its output voltage is not adjustable. If you need a voltage regulator, consider using a different device, such as the LT1086 or LT1965.
• How do I layout the PCB to minimize noise and ensure good performance with the LTC1144IS8?
  To minimize noise and ensure good performance with the LTC1144IS8, follow good PCB layout practices, such as keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing trace lengths and loops. Additionally, consider using a separate analog ground plane and keeping digital signals away from the analog circuitry.