Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general best practices for audio circuit board design, such as separating analog and digital grounds, using a star-ground configuration, and minimizing trace lengths and widths to reduce noise and EMI.
To ensure proper biasing, follow the recommended voltage supply and biasing circuitry shown in the datasheet. Additionally, make sure to decouple the power supply lines with capacitors and use a low-impedance power source to minimize voltage drops and noise.
The maximum power dissipation of the LM4951SDX/NOPB is dependent on the ambient temperature and the thermal resistance of the package. To ensure it doesn't overheat, follow the thermal design guidelines in the datasheet, use a heat sink if necessary, and ensure good airflow around the device.
Yes, the LM4951SDX/NOPB can be used in a stereo audio application. To configure it for stereo operation, use two devices, one for each channel, and follow the recommended circuitry and layout guidelines in the datasheet.
The typical settling time of the LM4951SDX/NOPB is around 10ms. This means that the device may take up to 10ms to reach its final output voltage after a change in input signal. This settling time may affect your audio application if you're dealing with fast-changing audio signals or require very low distortion.
LM4951SDX/NOPB datasheet
by Texas Instruments
