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C7973
C7973 is a high sensitivity multichannel detector head for use with back-thinned FFT-CCD area image sensors (S7963, S7964, S7965) that offer
high UV sensitivity and quantum efficiency. C7973 incorporates a low-noise driver/amplifier circuit that provides reliable operation from simple
external signals. C7973 includes a highly stable temperature controller that cools the sensor to a preset temperature level (Ts= -10 C) as soon as
the power is turned on. If the cooler fails and causes internal circuitry to overheat, the built-in protection circuit automatically turns off the power to
the thermoelectric cooler. Despite its compact size, the housing configuration is designed for good heat dissipation, and threaded mounting holes
on the front panel allow connections to other devices such as monochrometers.
Features
l Designed for back-thinned CCD area image sensor *
1
l Line binning operation/area scanning operation *
2
l Driver/amplifier circuit for low noise CCD operation
l Highly stable temperature controller
Cooling temperature: -10 0.05 C
(Ta=10 to 35 C)
l Simple signal input operation
l Compact configuration
Applications
l Fluorescence spectroscopy
l Raman spectroscopy
l Other low-light-level detection
I M A G E S E N S O R
CCD multichannel detector head
Designed for back-thinned CCD area image sensor
The table below shows CCD area image sensors applicable for C7973.
Since C7973 does not include aCCD area image sensor, so select the desired sensor and order itseparately.
CCD area image sensor
Type No.
Number of pixels
Number of active pixels
Active area
[mm (H) mm (V)]
S7963
80 72
64 64
1.536 1.536
S7964
124 56
108 48
2.592 1.152
S7965
232 56
216 48
5.184 1.152
*1: In normal CCD image sensors that receive light from the front surface, the active area is covered with electrodes for charge transfer.
These electrodes cut off UV radiation incident on the image sensor and also reduce the quantum efficiency. In contrast, back-
thinned CCD image sensors have a unique structure in which the back of the active area is finely ground to allow light to enter from
the back surface. This structure ensures high UV sensitivity and quantum efficiency because incident light need not pass through the
electrodes.
*2: The FFT-CCD was originally designed as a two-dimensional image sensor. However, it can be operated like a linear image sensor
having a large active area by transferring all the pixel signals in the vertical direction to the horizontal register (this is referred to as
line binning).
1
CCD multichannel detector head
C7973
I Absolute maximum ratings
Parameter
Symbol
Min.
Typ.
Max.
Unit
Supply voltage (for digital circuitry)
V
D1
-0.5
-
+7
V
A1+
-
-
+18
V
A1-
-
-
-18
Supply voltage (for analog circuitry)
V
A2
-
-
+30
V
D2
-
-
+7
V
p
-
-
+7
Supply voltage
V
F
-
-
+14
Digital input voltage
-
-
-
V
D (1, 2)
V
Operating temperature
Topr
+10
-
+35
Storage temperature
Tstg
0
-
+70
C
I Electrical characteristics
(Ta=25 C, V
,
=+5 V, V
)
+
=+15 V, V
)
-
= -15 V, V
)
=+24 V, V
,
=+5 V, Vp=+5 V, V
.
=+12 V, unless otherwise noted)
Parameter
Symbol
Min.
Typ.
Max.
Unit
High level
V
IH
+2.0
-
+5.0
V
Digital input
Low level
V
IL
-0.5
-
+0.8
V
CLK frequency
f
CLK
-
-
1
MHz
Data video readout frequency
fv
-
-
f
CLK
/4
Hz
Start pulse width
tst
1/f
CLK
-
-
s
High level (Io= -6 mA)
V
IH
+2.0
-
-
V
Digital output
Low level (Io=+6 mA)
V
IL
-
-
+0.8
V
Power supply operating conditions
Digital circuitry
V
D
+4.75
+5.0
+5.25
V
V
A1+
+14.5
+15.0
+15.5
V
V
A1-
-14.5
-15.0
-15.5
V
Analog circuitry
V
A2
+23.5
+24.0
+24.5
V
V
D2
+4.75
+5.0
+5.25
V
Vp
+4.75
+5.0
+5.25
V
Voltage
Other
V
F
+11.75
+12.0
+12.75
V
V
D1
(+5 VDC)
-
-
-
+200
mA
V
A1+
(+15 VDC)
-
-
-
+100
mA
V
A1-
(-15 VDC)
-
-
-
-100
mA
V
A2
(+24 VDC)
-
-
-
+30
mA
V
D2
(+5 VDC)
-
-
-
+30
mA
Vp (+5 VDC)
Ta=25 C
-
-
+1.0
+2.0
A
Current
V
F
(+12 VDC)
-
-
+100
-
mA
I Electrical and optical characteristics
(Ta=25 C, Ts= -10 C, V
,
=+5 V, V
)
+
=+15 V, V
)
-
= -15 V, V
)
=+24 V, V
,
=+5 V, Vp=+5 V, V
.
=+12 V)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Spectral response range
l
-
200 to
1100
-
nm
Vertical
-
300,000
-
Full well capacity
Horizontal
Fw
-
600,000
-
e
-
Conversion gain *
3
Sv
-
4
-
V/e
-
Dark current
DS
-
60
180
e
-
/pixel/s
Readout noise
Nr
-
30
60
e
-
rms
Dynamic range
DR
-
100,000
-
-
Photo response non-uniformity *
4
PRNU
-
3
10
%
*3: Including the circuit gain.
*4: Measured at 50 % of the full well capacity.
2
CCD multichannel detector head
C7973
I Device structure
ACTIVE PIXEL
TOTAL PIXEL
4 BLANK
4 BLANK
THINNING
THINNING
BEVEL
BEVEL ACTIVE PIXEL
N
M
1 2 3 4
2
3
4
4 BEVEL
4 BEVEL
P1H
SG
OG
OS
RD
RG
OD
P2H
5
6
2
14
4
1
12
3
TOTAL PIXEL
P2V
10
P1V
11
SS
13
I Dark current vs. temperature
I Specifications for temperature controller (C7041)
(Ta=25 C, Ts= -10 C, V
,
=+5 V, V
)
+
=+15 V, V
)
-
= -15 V, V
)
=+24 V, V
,
=+5 V, Vp=+5 V, V
.
=+12 V)
Parameter *
5
Symbol
Min.
Typ.
Max.
Unit
Cooling temperature
Ts
-11
-10
-9
C
Temperature control range
DTs
-0.05
-
+0.05
C
Power dissipation of TE-cooler element
Pp
-
-
2
W
Cool down time to reset temperature
to
-
-
5
min.
Setting temperature for overheat protection *
6
To
-
+45
-
C
*5: Other functions include error display, automatic power off, and detection of electrical opens and shorts by the thermosensor.
*6: Temperature at back side of housing (between housing and fan).
KMPDB0058EA
KMPDC0134EA
KMPDB0037EA
QUANTUM EFFICIENCY (%)
WAVELENGTH (nm)
(Typ. Ta=25 C)
0
200
400
600
800
1000
1200
10
20
30
40
50
60
70
80
90
100
FRONT-SIDED
FRONT-SIDED
(UV COAT)
BACK-THINNED
-50
-40
-30
-20
0
-10
10
20
30
TEMPERATURE (C)
0.1
1
10
100
1000
10000
DARK CURRENT (e
-
/pixel/s)
(Typ.)
3
I Spectral response (without window)
CCD multichannel detector head
C7973
I Block diagram
I Timing chart of line binning operation
LED
TH.H
P+
P-
TH1
TEMPERATURE CONTROLLER
TIMING
GENERATOR
D. GND
A. GND
CLK
Start
Trigger
EOS
TE-COOLER
VDD
CCD AREA IMAGE SENSOR
S7963, S7964, S7965
BUFFER
LOW-PASS
FILTER
Data Video
PRE-AMP
DRIVER
REGULATOR
VEE
CLAMP
OD
RD
OG
IG1H, IG2H
IG1V, IG2V
P1V, P2V, TG
P1H, P2H
SG
RG
SS, ISV, ISH
OS
TH2
Mode Select
Vp (+5V)
P. GND
V
D2
(+5V)
D. GND
V
F
(+12V)
F. GND
Temp Monitor
INVERTER
Cooling Control
V
D1
(+5V)
V
A1
+ (+15V)
V
A1
- (-15V)
V
A2
(+24V)
CCC
H-ch(N)
H-ch(N-9)
H-ch(N-10)
H-ch11
H-ch10
V-ch1
V-ch2
V-ch(M)
H-ch1
H-ch2
Start
CLK
P1V
P2V
P1H
P2H
SG
RG
Clamp
EOS
Trigger
Data Video
M=56, 72 N=80, 124, 232
V-ch1--V-ch4, V-ch (M-3)--V-ch (M): ISOLATION PIXELS
H-ch1--H-ch4, H-ch (N-3)--H-ch (N): BLANK PIXELS
H-ch5--H-ch8, H-ch (N-7)--H-ch (N-4): ISOLATION PIXELS
TG
KACCC0163EA
KACCC0164EA
4
CCD multichannel detector head
C7973
I Pin connection of "SIGNAL I/O" connector
15-pin D-sub connector
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Pin No.
Terminal name
Description
1
Mode select
Digital input signal used to select between the line binning operation and area scanning
operation.
HCMOS compatible.
High level or left open: line binning operation
Low level: area scanning operation
2
Data video
Analog video output. Positive polarity
3
V
A1+
(+15 V)
Analog power supply
4
V
A1-
(-15 V)
Analog power supply
5
V
D1
(+5 V)
Digital power supply
6
Start
Digital input signal for initializing the circuit.
HCMOS compatible. Positive logic.
The interval of the Start pulses determines the integration time of the CCD image sensor.
7
CLK
Digital input signal for operating the circuit.
HCMOS compatible. Rising edge operation.
8
EOS
Digital input signal for indicating end-of-scan of the image sensor.
HCMOS compatible. Negative logic.
9
A. GND
Analog ground
10
A. GND
Analog ground
11
V
A2
(+24 V)
Analog power supply
12
D. GND
Digital ground
13
D. GND
Digital ground
14
D. GND
Digital ground
15
Trigger
Digital output signal for A/D conversion. HCMOS compatible. Positive logic.
KACCC0069EA
5
I Timing chart of area scanning operation
Start
CLK
P1V
P2V
P1H
P2H
SG
RG
BLOCK 1
BLOCK M
Clamp
EOS
Trigger
Data Video
TG
Start
CLK
P1V
P2V
P1H
P2H
SG
RG
Clamp
EOS
Trigger
Data Video
NOTE) M=56, 72 N=80, 124, 232
V-ch1
H-ch1
H-ch10 H-ch11
H-ch (N-10) H-ch (N-9)
H-ch (N)
TG
KACCC0165EA
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