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    Why the Voltage drops from DAC ?

    user_504416177

      Hello Every body,

         

      I am generating 3Vp-p from DAC inside PSOC 5LP. It looks very nice as long as i do not connect it with bridge (in order to excite the bridge). When i connect it, the voltage drops from 3 to 1/3 of that. I tried to place a voltage follower at the output of the DAC but as a result my signal becomes very noise and drops too (but not much).

         

      I am failed to find the reason. Can any body have any idea?

         

      I attached the snap shot of my design.

         

      Looking forward for your suggestions.

         

      Regards

         

      Awais

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