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Subject: sigma delta output data

Date: 08/27/03 at 8:21 AM
Posted by: Dan Grosu
E-mail: xdanx2000[AT55]yahoo.com (replace [AT55] with @ to reply)
Message Posted:

I need to know in what format are the data from a sigma-delta output.
I know that after modulator data is a 1bit stream (PWM) with high freq. After that is a decimator with a low-pass FIR filter. I want to know haw to make this filter and in what order to introduce data. The code from FIR output filter is binary or PWM ???

I need help from someone who worked with all this stuff.



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