4.1 Unexpected offset and noise level in Differential Output mode

When the CLASSD peripheral is set to Differential Output mode (PWMTYP = 1), a significant output offset and an increased level of noise are observed on the audio outputs. The offset is systematic and is equal to 1/16 of the digital full scale.

Work around

To avoid the offset, add the opposite offset on the input signal of the CLASSD peripheral.

Affected Silicon Revisions