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noisy output from AD620

Question asked by middlehein on Jul 25, 2012
Latest reply on Aug 24, 2012 by ScottH

hello,

 

I am new to some of this stuff and was trying to set up a circuit where I am using a InAmp and the strange part s that I am jus ttesting the InAmp by appplying a 1V 100hz-1000hz signal to the inputs and my output looks noisy as is shown in the figure below. I am using a Hantek dso2090 ociliscope as seen in the pic. The circuit is quite simply just the fgen attached to the inamp a bipolar power source and a gain of 2. My expectation was that the output would be the same sine wave doubled and am not sure why it is so sloppy.

 

Thanks

Matt

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