在电路中，NMOS经常用作下管，S极接地，用G极来控制管子的导通截止，很方便。 NMOS用作上管时，因为S极电平不确定，即G极电平也不好确定，很不方便。 PMOS经常用作上管，S极接固定的VCC，用G极来控制管子的导通截止。 用作下管时，因为S极电源不确定，无法 ...

MOS管属于电压驱动型器件，广泛应用于现代电子电路中，常作为电子开关、放大器等功能使用。 箭头的方向代表了负电子的走向。 NMOS方式：控制信号G极为高电平时MOS管导通；低电平时，MOS管断开。 PMOS方式：控制信号G极为低电平时MOS管导通；高电平时，MOS管 ...

PMOS transistors are less vulnerable to substrate noise since they’re placed in separate wells; designers implement guard rings to attenuate the substrate noise propagation. However, substrate noise ...

For years—decades, in fact—the NMOS transistor world has been on cruise control. NMOS is naturally faster and its performance has scaled better than PMOS. PMOS has had a cost advantage. But lately, it ...

Device scaling is getting much harder at each new process node. Even defining what it means is becoming a challenge. In the past, gate length and metal pitch went down and device density went up.