MAX98390CEWX+T - Analog Devices

MAX98390CEWX+T Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the MAX98390CEWX+T?
  The recommended PCB layout for the MAX98390CEWX+T is to keep the analog and digital grounds separate, use a solid ground plane, and keep the audio signal traces away from the digital signal traces. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
• How do I optimize the performance of the MAX98390CEWX+T in a noisy environment?
  To optimize the performance of the MAX98390CEWX+T in a noisy environment, it's recommended to use a ferrite bead or a common-mode choke on the power supply lines, use a shielded cable for the audio signal, and keep the device away from sources of electromagnetic interference (EMI). Additionally, using a low-ESR capacitor on the power supply pins can help to reduce noise.
• What is the maximum power that the MAX98390CEWX+T can deliver to a speaker?
  The maximum power that the MAX98390CEWX+T can deliver to a speaker depends on the supply voltage and the impedance of the speaker. According to the datasheet, the device can deliver up to 2.5W of power to a 4Ω speaker with a 5V supply voltage. However, it's recommended to derate the power output based on the ambient temperature and the desired reliability of the system.
• How do I configure the MAX98390CEWX+T for a specific audio application?
  The MAX98390CEWX+T has several configuration options that can be set through the I2C interface. These options include the gain setting, the filter configuration, and the audio data format. The specific configuration will depend on the requirements of the audio application, such as the desired audio quality, the type of audio codec used, and the power consumption constraints.
• What is the typical current consumption of the MAX98390CEWX+T?
  The typical current consumption of the MAX98390CEWX+T depends on the operating mode and the supply voltage. According to the datasheet, the quiescent current is around 10mA with a 5V supply voltage, and the shutdown current is around 1μA. The current consumption will increase when the device is in active mode and driving a speaker.