Basic Knowledge of CMOS Analog IC Design

1. Physics of MOS Transistors

1.1

1.2

1.3


1.4

 

1.5

 

2. Single-Stage CMOS Amplifiers

2.1 CS Stage

2.1.1 CS Stage with Ideal Current-Source Load

2.1.2 CS Stage with Current-Source Load

2.1.3 CS Stage with Degeneration

A.

设电流为,或着在drain terminal加看电压,即可算出

B.

一个网络的即为他的输入电压所驱动的向外界提供的电流,或是从外界抽取的电流。所以针对研究的等效电路其"外界"应用一根接地的短路导线表示,因为此时体现驱动力的电流,全部都集中在了这一根短路导线上,而不可能出现在任何有阻支路上。

这说明了下图中左边两种组态都可化简成右边图所示的小信号模型。

C.

2.1.4 CS Stage with Diode-Connected Load

 

2.2 CG Stage

2.2.1 CG Stage with Ideal Current-Source Load

A.

B.

C.

2.2.2 CG Stage with Resistive Load and Impedance of Signal Source

A.

B.

这种现象同样可以用2.1.3 B中的方法进行理解。

C.

 

2.3 Source Follower: CD Stage

2.3.1 CD Stage with Ideal Current-Source Load

A.

B.

C.

2.3.1 CD Stage with Resistive Load and Drain Resistor

A.

B.

C.

 

2.4 Cascode Stage

A.

B.

C.

 

原文地址:https://www.cnblogs.com/tuoluofu/p/2924618.html