For input pins, you may put PDIO + NDIO + small resistor to protect the gate oxide- L) H2 B( x) C% z& `& G
For output pins, you may directly use GDPMOS and GGNMOS or use the output switch (if large enough) to forward the current to power / ground for +ve and -ve ESD pulse respectively ; J- [* p/ A7 `! c' g( U) Z* M& B. F, ^4 v0 F) x# \1 a x
any other suggestion?
只需要在gate和body之間連上一個diode即可 " U p/ _6 j# ^1 p因為cdm是從substrate透過gate oxide流到 input pad (假設此pad接地)% V( {: [/ M; Y
若加上cdm diode,它能提供一條捷徑從substrate流到input pad
[複製鏈接]
IP卡
狗仔卡
發表於 2008-7-19 00:22:56
顯身卡