I am using this class D amplifier SSM2356 in my design.
I am giving same input to the audio input left and right. I play a audio and probe the supply, input audio and the audio output signal (both left and right) at the speaker. Here is the waveform:
Strangely the output is a PWM signal with some ringing, but I believe it should have been amplified replica of the input signal.
Please suggest if my methodology of the audio measurement is correct? I would also like to get suggestions on reducing the ripple on power supply.