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AD5933 Vpp excitation voltage setting

Question asked by beatrice94 on Jun 25, 2018
Latest reply on Jun 25, 2018 by Snorlax

Hi all,

 

I am trying to undertsand how to AD5933 works, but I'm having trouble as in the documentation I find two things about setting the Vpp for the excitation voltage quite contradictory:

1) Vpp scales with the Vdd: "VDD*1/3.2=VoltageExcitationOutput(p-p)"

2) Vpp is set by the user using control registers 0x80, 0x81: "The user has the added flexibility to select one of four possible output excitation peak-to-peak ranges by setting Bit D8 and Bit D9 in the control register"

 

So, how does this actually work?

Thanks to everybody

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