Microelectronics 2 Sample Final

5/26/2018 Microelectronics 2 Sample Final

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Simon Fraser University

Faculty of Applied ScienceSchool of Engineering Science

ENSC325

Fall 2013

Final Exam

Sample Problems


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Problem 1:

Calculate the voltage gain of the differential pair depicted on figure below. Assume AV ,

when calculatingmG .


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Problem 2:

The cascade differential pair must achieve a voltage gain of 4000. All transistors are identical

and 200 . What is the minimum early voltage?


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Problem 3:

Using figure below, determine whether or not P is the virtual ground. Show your work


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Problem 4:

Assuming perfect symmetry and AV , compute the differential voltage gain of each stage.


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Problem 5:


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Problem 6:


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Problem 7:


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Problem 8:


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Problem 9:

Prove that P is a virtual ground.


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Problem 10:

The circuit of Figure below must provide a gain of 50 with1 2

5R R k . If , 5A nV V and , 4A pV V ,

calculate the required tail current.

Microelectronics 2 Sample Final

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