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Altera_Forum
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13 years ago

band pass FIR filter and weird response

Dear all, I have used altera quartus 12.0 FIR II compiler to generate a bandpass filter. The filter uses 11bits coefficients with 17bit data entry and has 80 taps. I put all that into sim...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Short summary of a rather long post, you have 2 LSB output error (signed value -2) with full scale DC input.

That's most likely a truncation error due to the no so high coefficient resolution. Normal operation so far.