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Demystifying Switched Capacitor Circuits
book

Demystifying Switched Capacitor Circuits

by Mingliang (Michael) Liu
June 2006
Intermediate to advanced content levelIntermediate to advanced
336 pages
10h 24m
English
Newnes
Content preview from Demystifying Switched Capacitor Circuits
Basic MOS Device Physics
9
VHjVd
kTR
RC
out in
on
on s
2
2
0
2
1
2
1
2
4
1
=
(
)
=
+
(
π
ωω
π
ω
))
=⋅
(
)
2
0
21
d
kTR
RC
RC
on
on s
on s
ω
π
ω
ω
arctan
==
=∞
=
0
ω
kT
C
s
(1.12)
hence the name kT/C noise (sometimes also called the sampling noise). Interestingly,
the total noise power at the output is independent of the actual on-resistance value
(R
on
). This is because when the thermal noise power density is increased with the on-
resistance (R
on
), the noise bandwidth of the fi lter, which is given by
ff
RC RC
ndB
on s on s
== =
ππ
π
22
1
2
1
4
3
(1.13)
is decreased with the same magnitude. Specifi cally, the total noise power can be
easily calculated by multiplying the spectral density given by Equati ...
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Publisher Resources

ISBN: 9780750679077