Other Parts Discussed in Thread: TAS2505
Tool/software:
The speaker output waveform was output using the evaluation board. The resulting speaker output waveform was a square wave.
Regardless of the volume, the amplitude voltage was ΔV = 9.5V. Isn't this waveform abnormal?
As I understand it, it is a sine wave, as in the sample waveform below, and the amplitude voltage changes depending on the volume.
TAS2505EVM wave↓
DAC 24db |
Vol=-0db |
yello : spk+
blue:spk -
red : blue - yellow
TAS2505EVM wave↓
DAC =24db | Vol=-10db |
Sample(TDA2822 BTL output) wave↓
yellow : spk+
blue:spk -
red : blue - yellow