What techniques are used for ESD protection?

[rogger123]

ESD protection

hi,
can someone suggest standard techniques which can be used for ESD protection.

 

[dainis]

Re: ESD protection

Look:
https://www.semtech.com
https://www.semtech.com/products/products_line_familydisplay.asp_Q_FamilyID_E_9_A_LineID_E_1
https://www.vishay.com/diodes/protection-tvs-esd/

 

[cesare]

Re: ESD protection

Usually sensitive input ar protected through an unidirectional clamp (transzorb) or two diodes that clamps the voltage to VCC or GND.

If possible you can add a capacitor (1..10 nf) between the input and groud. The capacitance on the input allows a lower voltage rise during the ESD discharge. However on high speed input you cannot use this capacitance.

 

[Jeekoky]

Re: ESD protection

Here is a book for ESD protection circuits. Hope it will be useful to you.

 

[dainis]

Re: ESD protection

Usually sensitive input ar protected through an unidirectional clamp (transzorb) or two diodes that clamps the voltage to VCC or GND.

Very popular and low cost is protection by BAV99 diodes with serial rezistor.

 

[waxegg]

ESD protection

Try to find the Pad Library of TSMC, you can find some useful example of ESD

 

[a_aziz]

ESD protection

hi.
the grounding is very common method to overcom to EMI from electrostatic dischrge(ESD).

 

[SkyHigh]

Re: ESD protection

You can use the following solutions, depending on circuit speed:

1. A Zener diode, typically in parallel to a decoupling capacitor, across the ESD-sensitive terminal, such as CMOS I/O pin. However this is only suitable for low to medium speed interfaces in the range below 100MHz.

2. A dual-rail clamp which is frequently used in high speed interfaces above 100MHz to a few GHz. Two diodes in reversed-bias are used. A diode between the rail voltage (V+) and the I/O pin that clamps the +ESD (greater than V+) from the I/O pin to the rail. Another diode between the ground (V-) and the I/O pin that clamps the -ESD (lower than V-) to ground.

 

[jinhaozi]

Re: ESD protection

Proffessor Liu in central frorida university is expert on ESD

 

[konqueror]

ESD protection

using zener diodes to limit the voltage .other possible methods are given in the book
"on chip protection for integrated circuits" by albert wang. it is available in the forum

 

[teagod]

Re: ESD protection

ESD component, capacitor, zener diode at signal input.
or choose a IC which has good ESD protection