Part Number: LM49352
As mentioned on datasheet, LS+ and LS- should have a 300KHz waveform after power on. But I get a 450KHz waveform as measured. Please explain how and why the frequency of the waveform is affected?
The speaker has voice for couple minutes even the frequency is 450KHz, but the waveform is gone forever after a few minutes. And it can't be recovered by cut off power. It seems class D amplifier is broken. Can you also explain this?
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In reply to Steve-Wilson:
In reply to Roger Luo:
Any comments on this? The volume of speaker is also low. I set the registers 0x14, 0x40, 0xa8 and 0xa9 to maximum value but the volume is still low. Is this related to the frequency of square wave?
Roger, if you change reg 0x01 value to 0x02, do you see any change?
The frequency of LS+/LS- has no change if I change reg 0x01 value to 0x02. I always get the same frequency 450KHz. And the volume of Speaker is always low even I set the LS amplifier to maximum. Do you think low volume is caused by frequency 450KHz? Are they related?
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