44128 - MYRRA

44128 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  Myrra recommends a 2-layer PCB with a solid ground plane on the bottom layer and a thermal relief pattern around the device's thermal pad to ensure efficient heat dissipation.
• How do I ensure reliable communication between the 44128 and my microcontroller?
  Use a dedicated SPI bus with a maximum clock frequency of 10 MHz, and ensure that the microcontroller's SPI mode is set to Mode 0 (CPOL=0, CPHA=0) to match the 44128's SPI interface.
• What is the maximum allowed voltage on the VCC pin during power-up?
  The maximum allowed voltage on the VCC pin during power-up is 3.6V. Exceeding this voltage may cause permanent damage to the device.
• How do I handle the 44128's power-down mode to minimize power consumption?
  To enter power-down mode, set the PDN pin low and ensure that all inputs are at a valid logic level. The device will consume less than 1 μA in power-down mode.
• What is the recommended ESD protection for the 44128?
  Myrra recommends using a TVS diode (e.g., SMF05C) on the VCC pin to protect the device from electrostatic discharge (ESD) events.