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output of digital filter to analog signal

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rameshrai

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Hi,

i have a digital filter in vhdl. i applied sinusoid signal to the filter through an ADC and wanted to convert back the filter output to analog but I get rectified output from DAC.

How to convert the digital filter output to analog signal with positive and negative swing?

thanks!
 

FvM

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First guess is, you are exceeding the ADC input voltage range. Or it's a problem of incompatible number coding schemes. More information needed.
 

rameshrai

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thanks FvM, your first guess is right, there was problem with voltage setting on the ADC.
 

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