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AD2S1200 exc voltage is different from the datasheet

Question asked by dump on Aug 11, 2011
Latest reply on Sep 15, 2011 by harryh

I am developing the R/D converter to use the resolver.

So, I am using the AD2S1200 12-bit R/D converter from ANALOG DEVICES.

During an experiment, I find a strange point.

EXC outputs voltage from AD2S1200 is not same as datasheet.

AD2S1200 which I am using has the EXC voltage, 4.5 Vp-p.

But, the datasheet is written “EXC voltages must be 3.34 ~ 3.83 Vp-p” page 4.

 

I have a question that why is the experiment value different from the datasheet value?

 

I attach the datasheet

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