PCA85162T/Q900/1,1 datasheet by NXP Semiconductors

PCA85162T/Q900/1,1 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of PCA85162T?
  A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the analog and digital sections separate, and use a common ground point for analog and digital grounds.
• How do I ensure electromagnetic compatibility (EMC) with PCA85162T?
  Use a shielded enclosure, keep the PCB away from metal objects, and ensure proper grounding. Also, use a common mode choke or ferrite bead to filter out high-frequency noise.
• What is the maximum allowed voltage on the analog input pins?
  The maximum allowed voltage on the analog input pins is VCC + 0.3V, but it's recommended to keep it within VCC + 0.1V to ensure reliable operation.
• How do I calibrate the internal voltage reference of PCA85162T?
  The internal voltage reference is calibrated during manufacturing, but you can adjust it using the VREF_ADJ pin. Connect a 10kΩ potentiometer between VREF_ADJ and GND, and adjust the potentiometer to achieve the desired voltage reference.
• What is the recommended clock frequency for PCA85162T?
  The recommended clock frequency is between 1 MHz and 10 MHz. However, the device can operate up to 20 MHz, but with reduced performance and increased power consumption.