关于管子的叉指数m

chudong

   

原帖由 belgium 于 2008-11-2 22:51 发表

                               
登录/注册后可看大图

it differs from layout type.
if you use figure, you mean to use source/drain sharing.
if you use multiple, it is not  to use sharing.
it is equal in low freauency design.
but if it is used in RF d ...

can u telll us, how to deal with this problem?
if the 'w' & 'l' is determined , how to make sure the 'figure'?

csmclee

当然不一样了，M=1和M=N的画法layout不一样，寄生效应就不一样，而且管子的VTH也不一样，对数字电路来说没有什么区别，对ANALOG来说区别大了。还有要分清楚M和F的区别。