Simple waves

1
Electron motion in the inversion layer Electrical
circuit models
2
Particle motion in the inversion layer
3
(No Transcript)
4
NMOS -- p type semiconductor VGS gt VT
saturating VDS
5
NMOS -- p type semiconductor -- gate voltage VGS
gt VT experimental measurement of parameters
(linear)
6
NMOS -- p type semiconductor VGS gt VT
saturating VDS
7
NMOS -- p type semiconductor -- gate voltage VGS
gt VT experimental measurement of parameters
(saturation)
8
Transient analysis
9
Transient analysis
Assume linear voltage inhomogeneity
10
Transient analysis
Constant drift
Nonlinear diffusion
Linear diffusion
11
Transient analysis
12
NMOS -- p type semiconductor normal biasing
13
Models of the MOSFET
14
Transconductance non-saturation
15
Transconductance saturation
16
Electrical circuit model
17
Electrical circuit modeling a MOSFET
18
Electrical circuit modeling a MOSFETlow-frequency
Lossless
19
Electrical circuit modeling a MOSFETlow-frequency
20
Electrical circuit modeling a MOSFETlow-frequency
21
Electrical circuit modeling a MOSFEThigh
frequency
22
Electrical circuit modeling a MOSFEThigh
frequency
23
Electrical circuit modeling a MOSFETgain
24
Electrical circuit modeling a MOSFETgain
Neglect
Miller capacitance
25
Frequency limitations
-
-
Decrease the size!
26
Ames
27
(No Transcript)
28
(No Transcript)
29
Simple three-dimensional unit cell