SSM2603 MIC_Boost Gain

We designed SSM2603 in few years ago.  Recently , We find some spec problem about Microphone Boost function.

In SSM2603 datasheet revision A , the microphone boost include MICBOOST_1/BOOST2 ,  40dB MIC gain will boost from SSM2603. but , in SSM2603 datasheet revision B , the boost only include 20 dB and control by MICBOOST(Register R4 , D0).

Can any one help to calify this, since we already design SSM2603 in lot of project , we need to confirm if any risk for this function.

  • 0
    •  Analog Employees 
    on Apr 21, 2015 12:36 AM

    Hello Justin,

    The current revision of the datasheet is Rev C. Looking at the revision history of the document I can see where these sections were changed to remove the reference to 40 dB of boost. The team must have decided to remove this feature from the specifications and the datasheet. I do not know why. The feature may still be there on the die but if it is not in the datasheet then we cannot guarantee the functionality or the specifications of this feature.

    Dave T