shanmei
Advanced Member level 1
What is the difference between guardring and tap.
I know that the ntap is actually n-well tap, and the pmos is embeded in the nwell, so ntap is tied to vdd.
ptap is actually p_substrate tap, and the nmos is p_substrate, so ptap is tied to vss.
But what is the p/n guarding, whether they are the same?
p guarding= ptap?
n guarding= ntap?
Thanks.
I know that the ntap is actually n-well tap, and the pmos is embeded in the nwell, so ntap is tied to vdd.
ptap is actually p_substrate tap, and the nmos is p_substrate, so ptap is tied to vss.
But what is the p/n guarding, whether they are the same?
p guarding= ptap?
n guarding= ntap?
Thanks.