Hi all,
    Please, I need a help working with GSM modules...
    I have implemented a solution with GSM g18 and automotive hands free.
    My real problem is when the power supply acquire a ripple deriving from
current peaks of gsm module.
    These peaks influence in audio out.
    I know that analogic ground and digital ground can't be connected.
    But how can I work without this reference? Is there a way to remove
consumption peaks from power supply?

Please help me!
Thanks in advance!




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