Texas Instruments provides a recommended PCB layout in the DRV600RTJR datasheet, but it's also important to follow general PCB design guidelines for audio circuits, such as separating analog and digital grounds, using a solid ground plane, and minimizing trace lengths and widths.
The DRV600RTJR has a fixed gain of 20dB, but you can adjust the input impedance by selecting the correct value for the input resistor (RIN). Use the equation RIN = (VCC / 2) / (IIN x 2) to calculate the optimal value for your application. Additionally, you can use the DRV600RTJR's internal feedback resistors to adjust the gain and impedance matching.
The maximum power dissipation of the DRV600RTJR is dependent on the ambient temperature and the thermal resistance of the package. According to the datasheet, the maximum power dissipation is 1.4W at 25°C. However, it's recommended to derate the power dissipation based on the operating temperature and thermal resistance to ensure reliable operation.
To reduce noise and EMI, use a low-noise power supply, decouple the power pins with capacitors, and use a ground plane to reduce radiation. Additionally, use shielding and filtering techniques, such as ferrite beads and common-mode chokes, to reduce EMI. Finally, ensure that the DRV600RTJR is placed away from noisy components and traces.
The recommended operating voltage range for the DRV600RTJR is 2.7V to 5.5V. Operating the device outside of this range may affect its performance, reliability, and lifespan.