Hints on ESD protection circuit design

I need to design ESD pretection for my circuit, but I don't have any idea about that.
Could anyone give me some hints on ESD protection circuit design?:|

Re: ESD protection?

may be you can add ESD protection component like TVS and varistor to protect your circuit ,also you can add capactive by pass for cost down

ESD protection?

which technology are you using for your circuit?
Many technology has own pad cells which contains ESD protection. (clamping diodes, active clamp, series resistance)

Re: ESD protection?

I am using CMOS technology

ESD protection?

I suggest you the book:
Albert Z.H. Wang : On-Chip ESD protection for integrated circuits
An IC design perspective

You can find this book on this page.

Re: ESD protection?

for ESD design,layout design are very important. you should ask some ESD design rules from process assembly.

Re: ESD protection?

you may use a ziner diode reverse bias

Re: ESD protection?

I just want to design a simple ESD pretection circuit for the input of my circuit


it seems like I can use this basic configuration with PMOS and NMOS. But I am a little confused why it used two ESD element with a current limiting resistor in between? usually what's the value of this current limiting resistor? it is said this resistor can limit the current flowing into the internal circuit, but does this resistor influence the function of the internal circuit?

and I also read that "It is critical to ensure that the avalanche breakdown of the primary protection devices is activated before the secondary protection devices enter their thermal breakdown so that the secondary ESD protection devices will not be destroyed by ESD stress.", but how can I know the exact avalanche breakdown and thermal breakdown voltages of each devices? how can I simulate a ESD protection devices to see its function? until now I only know people need to use large devices for the ESD protection circuits.