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problem with position data from AD2S1200 resolver to digital converter

Question asked by tommywd on Oct 19, 2012
Latest reply on Oct 29, 2012 by tommywd

I am using the AD2S1200 evaluation board with a resolver connected and am reading the position data using SPI, everything seems to be working fine but instead of getting all 0's to all 1's over 360 degrees I am getting all 0's to all 1's over 180 degrees, any ideas as to why this might be?

 

I have checked the sin and cos outputs from the resolver when rotating through 360 degrees and am getting the same signals as are shown in the AD2S1200 data sheet.

 

Thanks for any help/ideas

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