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Lecture 11 Single Stage FET Amplifiers: Common Source (CS ...

1 ECE 315 Spring 2007 Farhan Rana Cornell UniversityLecture 11 Single Stage FET Amplifiers: Common Source (CS) AmplifierThe Building Blocks of Analog Circuits - IIn this Lecture you will learn: General amplifier concepts (in terms of the two-port models) Common Source amplifier (CS) Small signal models of amplifiersECE 315 Spring 2007 Farhan Rana Cornell UniversityReminder: Thevenin and Norton Equivalent CircuitsConsider an arbitrary linear circuit:Linear circuitIt can be represented by any two of the following equivalent circuits:THR+-THVTHRITHTHTHTHRIV 2 ECE 315 Spring 2007 Farhan Rana Cornell UniversityTypes of Linear AmplifiersThere are four basic types of amplifiers that we will study in this course:1) Voltage to Voltage Amplifiers (or just Voltage Amplifiers)2) Voltage to Current Amplifiers (or Transconductance Amplifiers)3) Current to Current Amplifiers (or just Current Amplifiers)4) Current to Voltage Amplifiers (or Transimpedance Amplifiers)Ampvin+-Loadioutvout-+Ampvin+ -LoadAmpiinLoadioutAmpLoadvout-+iinECE 315 Spring 2007 Farhan Rana Cornell UniversityTwo-Port amplifier Models: A Voltage amplifier +inv-SR+-inR+-LRoutRinvvA+outv- A Voltage amplifier :sv+inv-inR+-LRoutRinvvA+outv-L inear circuitCan be represented as3 ECE 315 Spring 2007 Farhan Rana Cornell UniversityTwo-Port amplifier Models: A Voltage amplifier +

Common Source (CS) Amplifier The Building Blocks of Analog Circuits -I In this lecture you will learn: • General amplifier concepts (in terms of the two-port models) • Common source amplifier (CS) • Small signal models of amplifiers ECE 315 –Spring 2007 –Farhan Rana –Cornell University Reminder: Theveninand Norton Equivalent Circuits

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