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cancel JFET amplifier input capacitance changes

Question asked by fgueissaz on Aug 24, 2015
Latest reply on Nov 11, 2015 by fgueissaz

Walt Jung of Analog Devices published an application note about the bootstrap technique used on the negative power rail of AD744 JFET opamp to reduce its input capacitance changes (upon input voltage changes), affecting the amplifier's linearity when connected to high impedance sources.

 

I would like to know if this technique works with the ADA4817-1 wideband JFET opamp, and which power supply rail should be bootstrapped.

 

Thanks

 

Francois

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