A good PCB layout for the TAS5754MDCAR involves keeping the analog and digital grounds separate, using a solid ground plane, and placing the device close to the power supply. TI provides a recommended PCB layout in the datasheet and application notes.
To optimize thermal performance, ensure good airflow around the device, use a heat sink if possible, and avoid blocking the thermal pads on the bottom of the package. TI provides thermal design guidelines in the datasheet and application notes.
The recommended power-up sequence is to apply the analog power supply (AVDD) first, followed by the digital power supply (DVDD), and then the clock signal. This ensures proper device initialization and prevents latch-up.
To troubleshoot audio artifacts or distortion, check the power supply voltage, clock frequency, and digital signal integrity. Ensure that the device is properly configured and that the analog and digital grounds are separated. Use an oscilloscope to analyze the audio signal and clock signals.
The maximum allowed clock jitter for the TAS5754MDCAR is 100 ps RMS. Exceeding this limit can cause audio artifacts or distortion. Use a high-quality clock source and ensure that the clock signal is properly filtered and decoupled.
TAS5754MDCAR datasheet
by Texas Instruments
