[sdiy] JFET input protection

[Neil Johnson]

Hi,

Antti Huovilainen wrote: 
> What kind of protection is required for inputs that have discrete jfet as 
> the buffer? Is simple series resistor enough or do I need to add 
> zener diodes? (with the increase in nonlinear input capacitance)

Although written for op-amps, section 7 of the AD op-amp apps book might provide some useful tips:

http://www.analog.com/library/analogDialogue/archives/39-05/op_amp_applications_handbook.html

Cheers,
Neil
--
http://www.njohnson.co.uk