I M A G E S E N S O R
NMOS linear image sensor
S3901/S3904 series
Current output, high UV sensitivity, excellent linearity, low power consumption
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. NMOS linear image sensors also offer excellent output
linearity and wide dynamic range.
The photodiodes of S3901 series have a height of 2.5 mm and are arrayed in a row at a spacing of 50 µm. The photodiodes of S3904 series also
have a height of 2.5 mm but are arrayed at a spacing of 25 µm. The photodiodes are available in 3 different pixel quantities for each series: 128
(S3901-128Q), 256 (S3901-256Q, S3904-256Q), 512 (S3901-512Q, S3904-512Q) and 1024 (S3904-1024Q). Quartz glass is the standard window
material.
Features
Applications
Wide active area
Pixel pitch: 50 µm (S3901 series)
Multichannel spectrophotometry
Image readout system
25 µm (S3904 series)
Pixel height: 2.5 mm
High UV sensitivity with good stability
Low dark current and high saturation charge allow a long
integration time and a wide dynamic range at room temperature
Excellent output linearity and sensitivity spatial uniformity
Lower power consumption: 1 mW Max.
Start pulse and clock pulses are CMOS logic compatible
Figure 1 Equivalent circuit
Figure 2 Active area structure
START st
DEGITAL SHIFT RESISTER
(MOS SHIFT RESISTER)
END OF SCAN
ACTIVE VIDEO
CLOCK
CLOCK
1
2
ACTIVE
PHOTODIODE
Vss
b
SATURATION
CONTROL GATE
a
SATURATION
DUMMY VIDEO
CONTROL DRAIN
DUMMY DIODE
OXIDATION SILICON
KMPDC0020EA
N TYPE SILICON
P TYPE SILICON
S3901 SERIES: a=50 µm, b=45 µm
S3904 SERIES: a=25 µm, b=20 µm
KMPDA0059EA
ꢀ Absolute maximum ratings
Parameter
Symbol
Vφ
Value
15
Unit
V
mW
°C
Input pulse (φ1, φ2, φst) voltage
Power consumption *1
Operating temperature *2
Storage temperature
*1: Vφ=5.0 V
P
1
Topr
Tstg
-40 to +65
-40 to +85
°C
*2: No dew
HAMAMATSU [ HAMAMATSU CORPORATION ]
