The recommended PCB layout for the MAX9744ETH+ involves placing the device near the audio connector, using a solid ground plane, and keeping the analog and digital grounds separate. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
To optimize the MAX9744ETH+ for low noise and distortion, ensure that the power supply is well-regulated and decoupled, use a low-ESR capacitor for the AVDD pin, and keep the analog and digital grounds separate. Additionally, use a high-quality audio capacitor and ensure that the PCB layout is optimized for low noise.
The MAX9744ETH+ can handle up to 2.5W of power per channel, making it suitable for driving small to medium-sized speakers or headphones.
Yes, the MAX9744ETH+ can be used in a battery-powered device. It has a low quiescent current of 12mA and a shutdown mode that reduces the current consumption to 1μA, making it suitable for battery-powered applications.
The MAX9744ETH+ can be configured for different audio formats using the I2C interface. The device has a range of registers that can be programmed to select the audio format, sample rate, and other parameters. Refer to the datasheet for more information on the register settings for different audio formats.
MAX9744ETH+ datasheet
by Maxim Integrated Products
