
46-11Charge-Coupled Devices
In addition to P
clock
, the on-chip power dissipation per pixel is approximately given by
P
nq f L
nqf
nq
C
CCD
c
e c
BH
e
≈
+
−
( )
2
2 2
µ
ψ
(4
6
.18
)
where
n
i
s
t
he
n
umber
o
f
e
lectrons
i
n
a p
ixel
L
i
s
t
he
p
ixel
l
ength
μ
e
is the electron mobility
e
o
verall
p
ower
d
issipation
i
n
a C
CD
i
s
t
herefore
t
he
s
um
o
f
P
clock
and P
CCD
.
46.5 CCD Applications to Light Sensing
46.5.1 Optical Imaging and Spectroscopy
e many ne properties of CCDs have made them the detector of choice for the recording and readout
of im
ages
at bo
th
hi
gh
an
d
lo
w
li
ght
le
vels
. e ap
plications
in
clude
(1
)
re
connaissance,
bo
th
ci
vilian
an
d
de
fensive,
(2
)
sc
ene
an ...