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.
Proper biasing is critical for the LM4928SD. Ensure that the voltage supply is within the recommended range (4.5V to 15V), and that the input bias voltage is set correctly (typically 1/2 of the supply voltage). Also, make sure to decouple the power supply with capacitors to reduce noise and ripple.
The maximum power dissipation of the LM4928SD is dependent on the package type and ambient temperature. For the SD package, the maximum power dissipation is 2.5W. To ensure it doesn't overheat, use a heat sink if necessary, and ensure good airflow around the device. Also, follow proper thermal design practices, such as using thermal vias and thermal pads.
Yes, the LM4928SD can be used in a stereo audio application. To configure it for stereo, use two devices, one for each channel, and ensure that the input and output pins are properly connected. Also, make sure to use a common ground plane and follow proper layout practices to minimize crosstalk and noise.
The LM4928SD has built-in ESD protection, but it's still important to follow proper ESD handling and assembly practices to prevent damage. Use an ESD wrist strap or mat, and ensure that all equipment and tools are properly grounded. Also, follow proper packaging and storage procedures to prevent ESD damage during shipping and storage.
LM4928SD/NOPB datasheet
by Texas Instruments
