This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPA3221: Biasing the input for positive-only power supply

Part Number: TPA3221
Other Parts Discussed in Thread: TPS3801
Hello guys, i'm trying my first class-D amplifier for a 5.1 audio system.
My doubt is about the voltage range of the analog inputs of the IC (as using single-ended inputs). In datasheet it's says that the Absolute Maximum Rating to inputs is -0.3 to 5.5V, but in Electrical Characteristics it's says that the maximum input voltage swing is +/-2.8V. It got me a little confused.
The problem is that i was designing it to use a positive only power supply, so i biased the input to 2.5V before the mixer and crossover sections of the circuit.
My questions are:
  • The TPA3221 support a biased input?
  • Using a single-ended input can i get the full 112W@3Ohms? Or i need a differential inputs to full performance?
  • It's appropriate use the circuit supervisor TPS3801 to hold down the RESET pins to shutdown function?