Hi, Deb, The suggested measurements are determined for differential outputs. So, it couldn't be applied for single ended output. Regarding the suggestions of how to lower the noise floor level, I would suggest to take a look of the following app note: www.ti.com/.../slaa313.pdf . If the problem persists, the AIC3256 has internal filters that can be configured in order to improve the signal quality. Have you tried configuring them? Best regards, Luis Fernando Rodríguez S.
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