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[SOLVED] Split Attenuation Cap DAC

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elx

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Hello!

May I know why my dac output ranges from -1.8V to 0V instead of 0V to 1.8V. Thank you. No Split.JPG
split_capacitor.jpg
 

Hi,

I assume this is just a problem initialisation.

A purely capacitive divider has no fixed DC DC offset, it is random.
Put a resistive load at the output.(This forces the average output voltage to 0V)...let the simulation run for at least 5 tau, then I expect an output swing of +/-0.9V.

Klaus
 
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    elx

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