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SSM2306 gain selection

Question asked by Sayantan on Feb 12, 2016
Latest reply on Mar 1, 2016 by Sayantan

Hi all,

 

I am using ADAU 1961 audio codec's LOUTP, LOUTN, ROUTP, ROUTN pins to interface with SSM2306. I have to drive 600 ohm load at the output of SSM2306 . I have some doubts:

 

Firstly, is it necessary to use ferrite bead, LC filter at the output of the SSM2306. What will be the impact if I don't use this things & directly route the audio outputs to the audio connector?

 

Secondly, as I mentioned I have to drive 600 ohm load at the output of SSM2306, to meet this requirement what gain can I set for SSM2306? I understood the relation between Rext & gain, but is there any relation between Rext, Cin & the load which can be driven (in my case which is 600 ohm) ?

 

Regards,

Sayantan

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