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CMOS Differential Amplifier

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Presentation on theme: "CMOS Differential Amplifier"— Presentation transcript:

1 CMOS Differential Amplifier
Lab 7 2weeks

2 Diff Amp PMOS Current Mirror Diff pair Bias Current
NMOS Current Mirror SPICE Models: NMOS LEVEL=2 +VTO=-0.7 KP=5000E-6 LAMBDA=0.02 GAMMA=0.45 +TOX=90E-9 NSUB=3.7E15 PMOS LEVEL=2 +VTO=0.7 KP=400E-6 LAMBDA=0.05 GAMMA=0.9 +TOX=90E-9 NSUB=3.7E15

3 Current Mirroring (Copy)
Note Current Mirroring (Copy) ; ; Square Law Operation– Observations

4 CurreM4 nt Mirroring (Copy)
Note CurreM4 nt Mirroring (Copy) ; ; Square Law Operation– Observations

5 Developing the Bias Current
Setting biasing Current of Diff Amp, Note: I R = ID6 VDD -VSS= VSG + IB RB; R = (ß·2VDD - VTN) - (2·I))/(I·ß)

6 Diff Amp Current Behavior
Starting Eq 1 & 2 Solving 1 & 2

7 Diff Amp Testing Case 1 Vin = 0, Io = 0
Case 2 -2xV < Vin < +2xV Case 3 Vin > | 2xV|; Io = IB

8 Diff Amp Voltage Behavior

9 Diff Amp Voltage Behavior


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