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TPA3126D2: Amplifier distortion in output waveform.

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Part Number: TPA3126D2

I'm working on an amplifier using the TPA3126 in BTL operation.  I'm running it off of a 24VDC rail.  At all times the input signal and power rail look clean.  If I put in a 700mVrms input signal to the amp, the output waveform looks clean.

I

If I bump up the input to about 800mVrms I get the following waveform:

The schematic for the amplifier is identical to the schematic of the EVM board. 

I will also note that the amplifier is going through a thermal cycle, that's set up for self recovery while both waveforms were created.  

Any ideas?


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