
逻辑门符号

Inverter

CMOS NAND Gate

CMOS NOR Gate

MOS Capacitor
nmos cutoff


Linear


Saturation


Channel Charge

Carrier velocity

nMOS Linear I-V

nMOS Saturation I-V

Summary


nMOS Operation

pMOS Operation

Inverter Step Response

Delay Definitions




3-input NAND Caps

Elmore Delay

Estimate rising and falling propagation delays of a 2-input NAND driving h identical gates



多米诺电路


逻辑努力




推气泡法


请简要说明动态逻辑电路输出单调性特点,对输入信号的单调特征有什么样
的要求,如果两个电路需要级联时应该如何设计两个电路的连接。(12 分)
答案:
由于动态电路具有单调降的输出电压,即在预充电之后上拉网络输出电压依靠输
出电容保持高电平输出,没有上拉充电回路(4 分);输出电压降低后不能再升
高,输入信号的电压需要单调升高的,保证动态逻辑门电路下拉网络放电仅有一
次,因此两个动态逻辑电路不能直接级联(4 分)。在一个动态逻辑电路后连接
一个静态逻辑门反相(如反相器),改变输入单调性,然后再与动态逻辑电路级
联构成多米诺电路的形式(4 分)。

该电路具有或非逻辑功能(4 分),

噪声容限

反相器的速度

反相器功耗

方向器设计:综合

例题



集成电路低功耗设计
集成电路为何需要低功耗?
功耗来源





符合逻辑门动态功耗



减少漏电流-多阈值逻辑电路

CMOS和PMOS晶体管串联和并联



与非门NAND

或非门


VLSI 设计方法



世界集成电路发展历程


版图设计理念

VLSI设计主要流程

MOS晶体管结构

PN结单向导电——集成电路的基础


载流子是源到漏,电流是漏到源
mos 晶体管工作原理

V
D
S
——源漏电压
V_{DS} —— 源漏电压
VDS?——源漏电压
V
G
S
——栅源电压
V_{GS}——栅源电压
VGS?——栅源电压

饱和区工作条件
MOS管的转移特性
- 是指
I
D
S
I_{DS}
IDS? 随着
V
G
s
V_{Gs}
VGs? 的变化关系
MOS晶体管的电学本质

PMOS 晶体管

两类MOS晶体管

MOS管符号

CMOS结构及其优势



CMOS反相器设计

PMOS 高电平是源,低电平是漏;

所以两个漏极相连

静态分析



CMOS逻辑门构造
与非门设计方法





nmos 为1,pmos为2。

异或门和同或门

传输门

源和漏之间可以传

源和漏是不分的,只有人分析的时候才分
三态门




时序逻辑
如何锁存信号-正反馈


D 触发器


触发器的时序参数



时序逻辑的性能优化






时序逻辑的功耗优化
静态功耗和动态功耗-电容充放电。
降低时钟的负载

跟主从式结构区别——反馈环路



偏差和抖动对电路的影响





抖动一定使性能下降
正的偏差可以使性能上升,反之下降 。
工艺与设计接口


逻辑努力


