The recommended PCB layout for the MAX9715ETE+T involves keeping the analog and digital grounds separate, using a solid ground plane, and placing the device close to the audio input and output connectors. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and to minimize the length of the traces connecting the device to the audio inputs and outputs.
The MAX9715ETE+T can be configured for a specific audio application by adjusting the gain settings, input impedance, and output impedance. For example, for a microphone input, the gain can be set to 40dB, the input impedance can be set to 2kΩ, and the output impedance can be set to 10kΩ. The datasheet provides a detailed description of the configuration options and the corresponding pin settings.
The maximum power consumption of the MAX9715ETE+T is 12mA at 3.3V supply voltage. To reduce power consumption, the device can be operated at a lower supply voltage, the shutdown mode can be used when the device is not in use, and the power-down mode can be used to reduce power consumption during periods of low audio activity.
Common issues with the MAX9715ETE+T can be troubleshooted by checking the power supply voltage, ensuring that the device is properly configured, and verifying that the input and output signals are within the specified ranges. Additionally, the device's built-in diagnostic features, such as the output clipping indicator, can be used to identify issues with the audio signal.
The MAX9715ETE+T is compatible with other audio codecs or DSPs, and can be interfaced with them using the device's digital audio interface, which supports I²S, left-justified, or right-justified formats. The datasheet provides a detailed description of the interface options and the corresponding pin settings.
MAX9715ETE+T datasheet
by Maxim Integrated Products
