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DC Block component appears to introduce gain in ADAU1452

Question asked by ian on May 24, 2017
Latest reply on May 24, 2017 by DaveThib

Hi,

 

adding a DC Block component in the ADAU1452 appears to add 30dB of gain.

 

To test this I simplified the signal path as far as possible. Output 0 produces the same level as applied to the input, while output 1 produces 30dB more.Data format is 8.24(default) for both inputs and outputs.

 

I'm running 3.14 Build 1 Rev 1675.

Schematic

 

Any suggestion on how to resolve this please?

 

Thanks in advance.

Ian.

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