The recommended PCB layout for the MAX9722BEUE+ involves keeping the input and output traces as short as possible, 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 a dedicated ground plane to minimize noise and EMI.
To optimize the MAX9722BEUE+ for low noise and distortion, ensure that the device is operated within its recommended operating conditions, use a low-noise power supply, and minimize the length of the input and output traces. Additionally, use a high-quality audio input and output capacitors, and consider adding a noise filter or a ferrite bead to the power supply lines.
Yes, the MAX9722BEUE+ can be used in a battery-powered device. The device has a low quiescent current of 2.5mA, making it suitable for battery-powered applications. However, ensure that the device is operated within its recommended operating voltage range of 2.7V to 5.5V, and consider using a low-dropout regulator to minimize power consumption.
The MAX9722BEUE+ can be configured for different audio input and output configurations using external resistors and capacitors. For example, the device can be configured for a differential input or a single-ended input, and for a differential output or a single-ended output. Refer to the datasheet and application notes for specific configuration examples and guidelines.
The MAX9722BEUE+ has a maximum power handling capability of 1.4W per channel, making it suitable for driving headphones or small speakers. However, the actual power handling capability may be limited by the output impedance of the device, the load impedance, and the power supply voltage.
MAX9722BEUE+ datasheet
by Maxim Integrated Products
Findchips
