Small Signal-Low frequency- Analysis of Common Collector amplifier (Emitter Follower) -begins here

We are very familiar with common collector circuits- otherwise known as Emitter follower. Collector terminal is common to both input side and output side. During analysis, we are finding out the nature(characteristics) of the circuit by observing it's input and output resistances, voltage gain and current gain. Here discussing the analysis of CC amplifier using low frequency - small amplitude signals.

Small Signal - Low frequency - Analysis of Common Base amplifier using hybrid model

 Small Signal - Low frequency - Analysis of Common Base amplifier.. Yes, the characteristics of a CB amplifier is analyzing using low frequency -small amplitude signal. Analysis of CE amplifier is in another post. Better to go through it before diving into this.

 As discussed in previous posts, analysis requires three steps - 1)Taking the circuit which is to be analyzed 2)obtaining the small signal model and 3)finding out equations for parameters helps to get approximate values and it in turn will help to predict the characteristics of the circuit.

Analog Circuits I Syllabus(M G University - B Tech)

Module 1
 RC circuit:

          Response of low pass and high pass RC circuits to –
                                                   sine wave, step, pulse and square wave.
                                                   Properties of such output waves - Tilt and Rise time

          Differentiator, Integrator

Rectifiers:
        Analysis of Rectifiers – Half wave, Full wave, Bridge
        Analysis of Filters – L, C, LC, π
Clipping and Clamping circuit
Voltage Regulators :
       Zener voltage regulator
       Transistor series (with feedback)
       Short circuit and foldback protection
       Shunt voltage regulators
       Small signal diode model for low and high frequencies

Module 2

DC analysis of BJTs –
      BJT as amplifier
      Small signal equivalent circuits (Low frequency π and h Models only). Transistor Biasing circuits
      Stability factors
      Thermal runaway.

     Small signal analysis of CE, CB, CC configurations using approximate hybrid π model (gain, input and output impedance)

Module 3

MOSFET-

     I-V relation, load lines

     small signal parameters, small signal equivalent circuits

     body effect

     Biasing of MOSFETs amplifiers

Analysis of single stage discrete MOSFET amplifiers –
Expressions for   a. Small signal voltage gain and current gain 
                            b. Input and output impedance of 
                  1)Common Source amplifier with source bypass capacitor
                  2)Common Source amplifier without source bypass capacitor 
                  3)Source follower 
                  4)Common Gate amplifier

          

Module 4

Highfrequency equivalent circuits of 1)BJTs 2) MOSFETs,

 Miller effect, short circuit current gain, s-domain analysis, amplifier transfer function.
 Analysis of high frequency response of 1)CE, CB, CC amplifiers  2) CS, CG, CD amplifiers.

Module 5

Power amplifiers: Class A, B, AB and C circuits – efficiency and distortion.

Biasing of class AB circuits. Transformer less power amplifiers.

Feedback amplifiers – Properties of negative feedback.
     The four basic feedback topologies- 
        1)      Series-shunt  2) series-series  3) shunt-shunt  4) shunt-series.
  Analysis and design of discrete circuits in each feedback topology
  Loop gain, input and output impedance. Stability of feedback circuits
  Voltage amplifiers, Current amplifiers, Trans conductance amplifiers and Trans resistance amplifiers

References:

1)      Sedra and Smith: MicroelectronicCircuits, 4/e, Oxford University Press 1998.

2)      B. Razavi , “Fundamentalsof Microelectronics”, Wiley

3)      Donald A Neamen. : ElectronicCircuit Analysis and Design, 3/e, TMH.

4)      Millman and Halkias: IntegratedElectronics, TMH, 2004.

5)      Spencer & Ghausi: Introductionto Electronic Circuit Design, PearsonEducation, 2003.

6)      Roger T. Howe, Charles G. Sodini: Microelectronics: An IntegratedApproach, Pearson

Education,1997.

7)      R E Boylstead and L Nashelsky: Electronic Devices and Circuit Theory, 9/e, Pearson

Education