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Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
book

Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition

by John G. Webster, Halit Eren
February 2014
Intermediate to advanced content levelIntermediate to advanced
1921 pages
82h 13m
English
CRC Press
Content preview from Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
33-16 Electrical Variables
33.25 FET Noise Model
Figure 33.4a shows the MOSFET noise equivalent circuit, where i
td
is the channel thermal noise current
an
d
i
fd
is the channel icker noise current [1–7]. e mean-square values of these currents are given by
i
kT f
g
td
m
2
8
3
=
(3
3
.67
)
i
K f
Kf L C
fd
f
ox
2
2
4
=
(3
3
.68
)
where
K
i
s
t
he
t
ransconductance
p
arameter
g KI
m D
= 2
is the transconductance
L
i
s
t
he
e
ective
l
ength
o
f
t
he
c
hannel
C
ox
is the gate oxide capacitance per unit area
Let
th
e
re
sistances
to sig
nal
gr
ound
se
en
lo
oking
ou
t
of th
e
ga
te
an
d
th
e
so
urce,
re
spectively,
be de
noted
by R
1
and R
2
. e mean-square equivalent noise input voltage in series with either ...
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Publisher Resources

ISBN: 9781439848913