output of digital filter to analog signal

[rameshrai]

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]

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]

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