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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
Switched-Capacitor Data Converters
157
VB
V
out M
ref
1
2
(
)
=
(5.29)
We realize from the preceding that the SC confi guration around C
1
and C
2
is equiva-
lent to a sample-and-hold (S&H) with a one-half voltage gain.
After Φ
2
is turned off, the next least signifi cant bit B
M1
enters. Applying the
principle of charge conservation to the system, we can fi nd the output voltage at the
end of the second bit-conversion cycle, which is given by
V
BVC BVC BVC
C
out
ref M ref M ref
M
2
22
1
11 2
(
)
=
++
(
)
//
112
1
22+
(
)
=+
C
B
B
V
M
M
ref
(5.30)
This process continues till the end of the Mth bit-conversion cycle, and it can be
found that the desired analog output v ...
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Publisher Resources

ISBN: 9780750679077