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I have not used the AD535, but it is a sigma-delta converter which are notorious for DC offset problems. The data sheet shows "ADC channel offset error including hybrid amplifiers" values of 5mv or 20mv. The DC offset could be substantial. Bill > -----Original Message----- > From: tamas_harczos [mailto:] > Sent: Saturday, October 25, 2003 5:35 PM > To: > Subject: [c6x] DC offset > Hi there, > > I am working on a C6711 DSK. I've noticed that strange things happen > when I do some calculation to a digitized data (not from audio > daghter card, but from the good old AD535). I've realized that there > is a queerish DC offset with a value of around -430. Has anyone > noticed such a big DC offset yet, or is my AD one of the 'very bests'? > > Cheers, > > Tamas > > _____________________________________ > Note: If you do a simple "reply" with your email client, only > the author of this message will receive your answer. You > need to do a "reply all" if you want your answer to be > distributed to the entire group. > > _____________________________________ > About this discussion group: > > To Join: Send an email to > > To Post: Send an email to > > To Leave: Send an email to > > Archives: http://www.yahoogroups.com/group/c6x > > Other Groups: http://www.dsprelated.com > ">http://docs.yahoo.com/info/terms/ > |