S2011 EEE 3308C Quiz 1 Sol B

S2011 EEE 3308C - 10 3 ohm Vi Ri Ri Rs Vs Rs 4kohm Io Ro Ro RL Gm Vi Ri 10kohm Gm 30 mA V Io Ro Ro RL Gm Ri Ri Rs Vs Ro 5kohm Vo Io RL RL 2kohm

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
EEE 3308C Fall 2010 Quiz No. 1B Solution Consider the following circuit. The transconductance amplifier specs are 10kohm input resistance, 30 mA/V short-circuit transconductance, and 5kohm output resistance. a) Write down the equivalent circuit for the transconductance amplifier. b) Compute the overall voltage gain, vo/vs, in dB. c) If R i and R o of the transconductance amplifier could be modified to their optimal values (all other parameters the same), what would be the maximum possible overall voltage gain in V/V? kohm
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 10 3 ohm Vi Ri Ri Rs Vs Rs 4kohm Io Ro Ro RL Gm Vi Ri 10kohm Gm 30 mA V Io Ro Ro RL Gm Ri Ri Rs Vs Ro 5kohm Vo Io RL RL 2kohm Combining the expressions for Vi, Io, and Vo: Av Vo Vs Ro Ro RL Ri Ri Rs Gm RL Av Ro Ro RL Ri Ri Rs Gm RL Av 30.612 20 log Av ( ) 29.718 Av is maximized when Ri goes to infinity and Ro goes to infinity. Avmax Gm RL Avmax 60 V V...
View Full Document

This note was uploaded on 07/28/2011 for the course EEL 3308C taught by Professor Yoon during the Spring '11 term at University of Florida.

Ask a homework question - tutors are online