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getting analog switch common mode down to -0.10V

Question asked by timothy.starr on Jun 28, 2011
Latest reply on Jun 30, 2011 by FEB

Hi

 

I need the ADG709 input to go 1/10V below ground, so ourplan is to use a diode as a shunt regulator on V- (-15V at 10KOhm bias). The V+ supply pin is at 5V. Is this a viable approach? What are the pitfalls? See attached.

 

Thanks

 

-Tim Starr on behalf of AK.G

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