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Re: AD8237 Gain/Bandwidth problem

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Hey Achim thanks for the reply!  I'm actually just trying to design a circuit for 0-3.3V sensors so I don't really need a negative Vs- thats why I just set it to ground.  The issue in my lab is that my signal generator outputs Vpp signals so they go negative.  I just thought it would output the positive half then like it does at low frequencies.  Do you think the response would be correct if I put a negative 3.3V rail in there?  I wont' ever have anything to produce a negative voltage other than my signal generator i'm testing with.  My A/D would get mad if I did have a negative voltage though I think.

 

What if I passed my signal generator output through a diode so I only got the positive half of the sine wave?  Should I expect full bandwidth when passing only the positive portion through?  That would actually be very easy for me to lab test.


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