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PDF TCD2905D Data sheet ( Hoja de datos )
| Número de pieza | TCD2905D | |
| Descripción | TOSHIBA CCD Image Sensor CCD (charge coupled device) | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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TOSHIBA CCD Image Sensor CCD (charge coupled device)
TCD2905D
TCD2905D
The TCD2905D is a high sensitive and low dark current 5400
elements × 6 line CCD color image sensor which includes CCD
drive circuit and clamp circuit. The sensor is designed for
scanner.
The device contains a row of 5400 elements × 6 line staggered
photodiodes which provide a 48 lines/mm (1200 dpi) across a A4
size paper. The device is operated by 5 V pulse and
12 V power supply.
Features
· Number of Image Sensing Elements: 5400 elements × 6 line
Weight: 4.5 g (typ.)
· Image Sensing Element Size: 5.25 µm by 5.25 µm on 5.25 µm
· Photo Sensing Region: High sensitive and low dark current PN photodiode
· Distanced Between Photodiode Array: 63 µm (12 lines)
· Clock: 2 phase (5 V)
· Power Supply:12 V Power Supply Voltage
Pin Connections (top view)
· Internal Circuit: Clamp Circuit
· Package: 22 pin CERDIP Package
OS3 1
22 OS2
· Color Filter: Red, Green, Blue
SS 2
21 OS1
Maximum Ratings (Note1)
Characteristic
Clock pulse voltage
Shift pulse voltage
Reset pulse voltage
Clamp pulse voltage
Switch pulse voltage
Power supply voltage
Operating temperature
Storage temperature
Symbol
VBA
VSH
V RS
V CP
V SW
VOD
Topr
Tstg
Rating
-0.3~8.0
-0.3~15
0~60
-25~85
RS 3
CP 4
Unit
NC 5
NC 6
V NC 7
f2A2 8
f1A2 9
V
°C SH3 10
°C SS 11
20 OD
19 SW
18 NC
17 NC
16 NC
15 f2A1
14 f1A1
13 SH1
12 SH2
Note 1: All voltage are with respect to SS terminals (ground).
1 2002-04-03
1 page  
TCD2905D
Note 10: Random noise is defined as the standard deviation (sigma) of the output level difference between two
adjacent effective pixels under no illumination (i.e. dark conditions) calculated by the following procedure.
Output waveform
(effective pixels under
dark condition)
video output
200 ns
video output
200 ns
DV
pixel (n)
pixel (n + 1)
(1) Two adjacent pixels (pixel n and n + 1) after reference level clamp in one reading are fixed as
measurement points.
(2) Each of the output level at video output periods averaged over 200 ns period to get V (n) and V (n + 1).
(3) V (n + 1) is subtracted from V (n) to get DV.
DV = V (n) - V (n + 1)
(4) The standard deviation of DV is calculated after procedure (2) and (3) are repeated 30 times (30
readings).
DV
=
1
30
30
å DVi
i =1
s=
1
30
30
å(
i =1
DVi－DV
)2
(5) Procedure (2), (3) and (4) are repeated 10 times to get sigma value.
(6) 10 sigma values are averaged.
s
=
1
10
10
ås
j=1
j
(7) I value calculated using the above procedure is observed 2 times larger than that measured
relative to the ground level. So we specify random noise as follows.
NDs =
1
2
s
5 2002-04-03
5 Page 
Typical Spectral Response
1.0
Ta = 25°C
0.8
Blue
0.6
0.4
0.2
0
400 450
Spectral Response
Green
500 550 600
Wavelength l (nm)
Red
650
TCD2905D
700
11 2002-04-03
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet TCD2905D.PDF ] | |
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