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AD736 behaviour in multisim

Question asked by Jinu on Oct 5, 2017
Latest reply on Oct 7, 2017 by Jinu

Hi Folks,

I am trying to simulate AD736 behaviour in multisim. I have used the reference design in the data sheet on page 15 diagram 25 -  AD736 with a High Impedance Input Attenuator.

 

But when i put a 1V PK signal at 50Hz it gives an output of 77.7mV as the RMS value, when actually the RMS value should be around 70.7 mv. This is almost a 10% error margin which is not acceptable.

 

What could be wrong. Circuit is shown below in the attachment.

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