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
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Designed for back-thinned CCD area image sensor *
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Line binning operation/area scanning operation *
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Driver/amplifier circuit for low noise CCD operation
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Highly stable temperature controller
Cooling temperature: -10 ± 0.05 ˚C
(Ta=10 to 35 ˚C)
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Simple signal input operation
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Compact configuration
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.
*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, backthinned 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).
■ Electrical and optical characteristics
(Ta=25 °C, Ts= -10 °C, V
,
=+5 V, V
ParameterSymbolMin.Typ.Max.Unit
Spectral response range
Full well capacity
Conversion gain *
3
Dark currentDS-60180e-/pixel/s
Readout noiseNr-3060e-rms
Dynamic rangeDR-100,000-Photo response non-uniformity *
*3: Including the circuit gain.
*4: Measured at 50 % of the full well capacity.
)
+
=+15 V, V
Vertical-300,000Horizontal
4
)
-
= -15 V, V) =+24 V, V, =+5 V, Vp=+5 V, V.=+12 V)
l
Fw
-
-600,000-
200 to
1100
Sv-4-µV/e
PRNU-±3±10%
-nm
-
e
-
2
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CCD multichannel detector head
C7973
■ Specifications for temperature controller (C7041)
(Ta=25 °C, Ts= -10 °C, V
Parameter *
,
=+5 V, V
5
Cooling temperatureTs-11-10-9°C
Temperature control range
Power dissipation of TE-cooler elementPp--2W
Cool down time to reset temperatureto--5min.
Setting temperature for overheat protection *
*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).
2Data videoAnalog video output. Positive polarity
3V
4V
5V
(+15 V)Analog power supply
A1+
(-15 V)Analog power supply
A1-
(+5 V)Digital power supply
D1
6Start
7CLK
8
EOS
9A. GNDAnalog ground
10A. GNDAnalog ground
11VA2 (+24 V)Analog power supply
12D. GNDDigital ground
13D. GNDDigital ground
14D. GNDDigital ground
15TriggerDigital output signal for A/D conversion. HCMOS compatible. Positive logic.
9101112
KACCC0069EA
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
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.
Digital input signal for operating the circuit.
HCMOS compatible. Rising edge operation.
Digital input signal for indicating end-of-scan of the image sensor.
HCMOS compatible. Negative logic.
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CCD multichannel detector head
■ Pin connection of "TE CONTROL I/O" connector (C7041)
9-pin D-sub connector
2345
1
9
8
67
KACCC0075EA
Pin No.Terminal nameDescription
1V
2Temp monitorAnalog output signal of the temperature of the CCD image sensor
3Cooling control
4Vp (+5 V)
5V
6D. GNDGround
7D. GNDGround
8P. GND
9F. GNDPower supply return for cooling fan
Available for using same power supply (+5 V) for "+VD2" and "+Vp".
(+5 V)Digital power supply
D2
Digital input signal for starting to cool down. HCMOS compatible.
High level or left open: cooling
Low level: stand-by
Power supply for the thermoelectric cooler in the CCD image sensor.
(Please use AWG 18 wire)
(+12 V)Power supply for cooling fan
F
Power supply return of the thermoelectric cooler mounted in the CCD image sensor.
(Please use AWG 18 wire)