Download Lab1 Common source Amp, the source follower and common gate

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Transcript
Lab1 Common source Amp, the source follower, and common gate Amp
Objective: To be familiar with Common source Amp, the source follower, and common
gate Amp.
Motivation: Single-stage amplifiers are used in virtually every op-amp design.
Fig 1 Common source amplifier
Fig 2 the source follower
Fig 3 Common gate Amp
Lab:
For EE135, attach your libraries to the tech library AMI 0.60 C5N.
For a good tutorial on ac analysis with Spectre, see pp. 12-21 of
http://www.ee.ucr.edu/~rlake/EE135/tutorial_1_06.pdf
1 Build the circuits in figs.1-3 in Cadence. Use W=1.5 and L=600n for ALL transistors
as shown in Fig. 3. Also, combine the voltage sources on the right into one 5V source as
shown in Fig. 3.
For each amplifier, calculate and plot the magnitude and phase of the gain as a function
of frequency from DC to 2 decades past the -3dB point.
For each amplifier, record the low frequency (f << f(-3dB)) gain (including the sign of
the gain) and f(-3dB).
What to hand in:
Turn in screenshots of your circuits. Each circuit should be followed by the plots of the
magnitude and phase of its gain and the recorded low frequency gain and f(-3dB).