Can I design a pad without ESD

[wangkes]

for minimum input capicitance and leakage current,
I want to design a input node without ESD protection.

Can I ? Is there any design like this and can run reliably for a long time ?

THANKS.

 

[erikl]

Sure, if you can guarantee for no ESD event during handling, and no over-/undervoltage spike during operation.

As a compromise you could use minimum RDD (resistor-diode-diode) protection + bootstrapping to reduce the input capacitance.

 

[dick_freebird]

You can, but if this is a standard product you will
have a lot of field returns later. Bare inputs can have
handling ESD levels below 10V on modern technologies
and this is very difficult for anyone's production line
to live up to.