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Design >> Mixed-Signal Design >> question in multibit sigma delta modulator
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Message started by glacieryy on May 6^th, 2006, 7:40pm

Title: question in multibit sigma delta modulator
Post by glacieryy on May 6^th, 2006, 7:40pm

Hi all,
I want to design a multibit MASH sigma delta modulator.I know in most case ,the multibit DAC is used in the last stage,but now I want to use multibit DAC in every stage and I know in the first stage I should use DEM to shape or average the nonliearty caused by DAC.

The question is how to decide the bit number of DAC in every stage.

Thanks in advance.

Best regards
glacier