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AD7768 SPI question

Question asked by Jackey.HHuang on Aug 18, 2015
Latest reply on Aug 16, 2018 by awozniak

Hi, Sir:

I have an issue about AD7768 as below:

I used "SPI control mode" to set wideband or sinc filter mode, and "let pin11 floating".

When the FILTER_TYPE_A is set SINC filter mode, ADC work is normal.

But the FILTER_TYPE_A is set wideband mode, ADC DRDY doesn’t pull-high and DATA doesn’t action.

 

I want to konw why I cannot use "SPI control mode" to cantrol ADC filter type, thanks.  

 

 

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