RL0512PAQ-712 查看數據表（PDF） - PerkinElmer Inc
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RL0512PAQ-712
PerkinElmer Inc
RL0512PAQ-712 Datasheet PDF : 8 Pages
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Linear Photodiode Array
Imagers
Description (cont.)
P-series imagers combine high-perfor-
mance photodiodes with high-speed
CCD readout registers and a high-
sensitivity readout amplifier. Refer
to Figure 1 for construction details.
Light Detection Area
The light detection area in P-series
imagers is a linear array of contiguous
pinned photodiodes on 14 µm centers.
These photodiodes are constructed
using PerkinElmer’s advanced photo-
diode design that extends short-wave-
length sensitivity into the deep UV
below 250 nm, while preserving 100%
fill factor and delivering extremely
low image lag. This unique design
also avoids polysilicon layers in the
light detection area that reduces the
quantum efficiency of most CCD
imagers. The P-series imagers are sup-
plied with glass windows for general
visible use, and fused silica windows
for use in the ultraviolet below 350 nm.
See Figure 2 for the sensitivity and
window transmission curves.
For lowest lag, all P-series imagers
feature pinned photodiodes. Pinning,
which requires a special semiconduc-
tor process step, provides a uniform
internal voltage reference for the
charge stored in every photodiode.
This stable reference assures that
every photodiode is fully discharged
after every scan.
Figure 2a: Spectral Sensitivity Curve
100
100
90
90
Right Scale
80
80
70
70
60
60
50
50
40
40
Left Scale
30
30
20
20
10
10
0
0
250 350 450 550 650 750 850 950 1050
Wavelength (nm)
Figure 2b: Window Transmission Curve
100 Fused Silica
90
80
70
60
50
Glass
40
30
20
10
0
150
250
350
450
550
650
750
850
950
1050
Wavelength (nm)
Photodiodes covered with light
shields included at one or both ends
of the imager provide a dark current
reference for clamping. These are
separated from the active photodi-
odes by two unshielded transition
pixels that assure uniform response
out to the last active photodiode.
Due to the potential for light leak-
age, the two dark pixels nearest
the transition pixels should not
be used as a dark reference.
Figure 1: Imager Functional Diagram
N = 512 for the RL0512P
N = 1024 for the RL1024P
N = 2048 for the RL2048P
3 Isolation stages
10 Dark pixels (D1 ... D10)
2 Transition pixels (T1, T2)
(Light shield ends between D10 and T1)
N Active pixels (1...N)
2 Transition pixels (T3, T4)
(Light shield ends between T4 and D11)
10 Dark pixels (D11...D20) (Not used in RL0512P)
Antiblooming/Exposure Control Gate
D1 . . . . . . . . . . . . . . . . . . . .D10 T1 T2 1 2 3 . . . . . . . . .
N-1 N T3 T4 D11 . . . . . . . . . . . . . . . . . . . .D20
Transfer Gate
Output
Amp
3 CCD Isolation Stages
2-Phase Buried Channel CCD Shift Register
www.perkinelmer.com/opto
DSP-101 01H - 7/2002W Page 2
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