Post Go back to editing

MAX98091 MCLK : 58.9 MHz freq's EMI Issue

Category: Hardware
Product Number: MAX98091
Hello sir,
 
We have used the Max98091 in our design and we have set the following clocks:
MCLK: 58.9 MHz
BCLK: 3 MHz
LRCLK: 48 KHz
 
Please let me know if you need more information from our end but we are facing multiple harmonic issue in multiple of Mclk - 58.9 MHz i.e.  294, 412, 589, 884 etc.
Please do the needful and provide your valuable feedback asap.
 
Thanks,
Mahammadirfan Saiyed
9722437369
  • Hello, Mahammadirfan,

    This is a novel combinations of clock frequencies to me, but I'll try to help as much as I am able to.

    Would you be able to share how the MCLK line is routed on your PCB?  Many times higher EMI can be caused by long trace length or incomplete shielding and can be solved with PCB routing.

    I can look at some other things, but first I would like to review the current layout.

    Regards,

    Ed