ADAU1772 : fs=44.1KHz

SigmaDSP & SigmaStudio Mr.K Nov 26, 2012 00:00 2 replies Original on forum ↗

ICs: ADAU1772

Mr.K Question

Nov 26, 2012 00:00

Hello,

Can the ADAU1772 use the sampling frequency of 44.1KHz?

Is it possible in the following settings?

Integer mode:

MCLK Input (MHz) = 11.2896MHz

Input Divider (X) = 1

Integer (R) = 4

Fractional mode:

MCLK Input (MHz) = 12MHz

Input Divider (X) = 1

Integer (R) = 3

Denominator (M) = 625

Numerator (N) = 477

Regards,

Mr.K

adau1772

Integrated/Special Purpose A/D Converters

Audio CODECs

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ADIApproved Reply

Nov 26, 2012 00:00

Hi Mr. K,

Thanks for the question. What is your use case for operating the part with a sampling rate of 44.1kHz?

If, for example, you are trying to use the serial ports with an sampling frequency of 44.1kHz, then you can do so by setting the port to a 48kHz fs and scaling down the MCLK input to 11.2986MHz and using 'Integer Mode' or 12MHz and 'Fractional Mode' like in your examples above. This would work fine.

Let me know if you are trying to accomplish something different.

Regards,

BillJ

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EZAdministrator Reply

Aug 2, 2018 00:00

This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

Thank you,
EZ Admin

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