模拟CMOS集成电路设计：3-Single-Stage Amplifiers

1、Chapter 3Single-Stage Amplifiers第2页Analog DesignNon-linear systemTradeoffs3.2 Common-Source Stage3.2.1 Common-Source Stage with Resistive Load第3页第4页Common Source (cont.)How to maximize the voltage gain of a common-source stage?第5页Common Source (cont.)第6页Common Source (cont.)第7页第8页3.2.2 Common Source

2、 with Diode-Connected Load第9页第10页CS with Diode-Connected Load (cont.)第11页Another method Large signal analysisGain is independent of bias current!第12页Whats the final value of Vout if I1 drops to zero?I1 Vov2 For small I1,VGS2VTH2 Vout VDD-VTH2Output characteristic curve of Fig. 3.9CS with Diode-Conne

3、cted Load (cont.)第13页This implies substantial voltage swing constraint.第14页第15页CS with Current Source Load第16页Assuming ro2 large,3.2.4 CS with Triode Region Load第17页CS with Source Degeneration第18页CS with Source Degeneration (cont.)第19页CS with Source Degeneration (cont.)第20页第21页第22页CS Output Resistan

4、ce第23页第24页第25页Lemma.第26页Example 3.6 CS Gain Example第27页3.3 Source Follower第28页1. Large signal derivation第29页第30页Output Resistance第31页第32页第33页Source Follower with Current Source Load第34页第35页3.4 Common Gate第36页第37页Common Gate (cont.)第38页Common Gate (cont.)第39页第40页第41页第42页Output Resistance of CG第43页第44页3.5 Cascode Stage第45页第46页第47页第48页第49页How to increase gain?1. Cascode structure;2. For a given bias current, increase L of mosfet.第50页Cascode Stage (cont.)第51页第52页第53页The shielding property of cascodes diminishes if the cascode device enters the triode region.第54页3.5.1 Folded Cascode第55页第56页第5