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sine generator with delta sigma DAC

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asalazar

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sine generator

Hi everyone,

I need to generate a sine wave from a LC tank based circuit and a Delta Sigma DAC. The circuit seems quite simple (from an article of Roberts and Lu on BIST). All good except the resulting output is not a sinewave (close to it but not close enough) and since I am very new to verilog, I am quite sure the problem as to do with my coding. Can anyone lend a hand? I am attaching the code for the 2nd order Delta Sigma DAC. Thanks in advance
 

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