IMAGE SENSOR
NMOS linear image sensor
S3901-1024Q, S3904-2048Q
Large active area type with 51.2 mm detection length
NMOS linear image sensors are self-scanning photodiode arrays designed specifically as detectors for multichannel spectroscopy. The scanning
circuit is made up of N-channel MOS transistors, operates at low power consumption and is easy to handle. Each photodiode has a large active
area, high UV sensitivity yet very low noise, delivering a high S/N even at low light levels. The current output type NMOS linear image sensors
also feature excellent output linearity and wide dynamic range. S3901-1024Q uses photodiodes with a height of 2.5 mm, arrayed at a spacing of
50 碌m. S3904-2048Q has photodiodes with a height of 2.5 mm, arrayed at a spacing of 25 碌m. The photodiode arrays are available in 2 different
pixel quantities, 1024 (S3901-1024Q) and 2048 (S3904-2048Q). Quartz glass is the standard window material. Dedicated driver circuit C7615
(sold separately) is also provided.
Features
Pixel pitch: 50 碌m (S3901-1024Q)
25 碌m (S3904-2048Q)
Pixel height: 2.5 mm
Active area length: 51.2 mm
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High UV sensitivity with good stability
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Low dark current and large saturation charge allow long
integration time and a wide dynamic range at room temperature
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Excellent output linearity and sensitivity spatial uniformity
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Low power consumption: 1 mW Max.
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Start pulse and clock pulses are CMOS logic compatible
Applications
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Large active area, long detection length
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Multichannel spectrophotometry
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Image readout system
Figure 1 Equivalent circuit
START
CLOCK
CLOCK
st
1
2
DIGITAL SHIFT RESISTER
(MOS SHIFT RESISTER)
END OF SCAN
Figure 2 Active area structure
ACTIVE
PHOTODIODE
ACTIVE VIDEO
Vss
SATURATION
CONTROL GATE
SATURATION
CONTROL DRAIN
DUMMY DIODE
KMPDC0020EA
b
a
OXIDATION SILICON
1.0 碌m
1.0 碌m
DUMMY VIDEO
c
N TYPE SILICON
P TYPE SILICON
S3901-1024Q: a=50 碌m, b=45 碌m, c=2.5 mm
S3904-2048Q: a=25 碌m, b=20 碌m, c=2.5 mm
KMPDA0124EB
s
Absolute maximum ratings
Parameter
Input pulse (蠁1,
蠁2, 蠁st)
voltage
Power consumption *
1
Operating temperature *
2
Storage temperature
*1: V蠁=5.0 V
*2: No condensation
Symbol
V蠁
P
Topr
Tstg
Value
15
1
-40 to +65
-40 to +85
Unit
V
mW
擄C
擄C
400 碌m
1
1
2
3
4
