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PDF MN3611RE Data sheet ( Hoja de datos )
| Número de pieza | MN3611RE | |
| Descripción | CCD Linear Image Sensor | |
| Fabricantes | Panasonic | |
| Logotipo |  |
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CCD Linear Image Sensor
MN3611RE
Color CCD Linear Image Sensor
with 720 Pixels each for R, G, and B Colors
s Overview
The MN3611RE is a high responsivity CCD color linear image
sensor having low dark output floating photodiodes in the
photodetector region, CCD analog shift registers for read out, and 720
pixels each for the primary colors R, G, and B.
It can read a B6 size color document with a high quality and a
resolution of 170dpi.
s Features
• 2160 (720 × R.G.B) floating photodiodes and an n-channel buried
type CCD shift registers are built in a single chip.
• It is possible to read a B6 size color document with a high quality
and a resolution of 170dpi.
• RGB primary colors type on chip color filters are used for color
separation.
• Very high responsivity is obtained because voltage amplifier
circuits are built in the chip.
• Use of photodiodes with a new structure has made the dark output
voltage very low.
• Large signal output of typically 2V at saturation can be obtained.
s Block Diagram
VSS øSG
22 21
ø2
19
s Pin Assignments
1
OS 1
DS 2
VDD 3
øR 4
NC 5
ø1 6
NC 7
NC 8
NC 9
NC 10
NC 11
22
21
20
19
18
17
16
15
14
13
12
VSS
ø SG
NC
ø2
NC
NC
NC
NC
NC
NC
NC
2160
(Top View)
C20 WDIP022-G-0470
s Application
• Reading out color images in a color scanner.
Signal
output
amplifier
Compensation
output
amplifier
121 212 2121 21 21 21 1 21 21 21 21 21
2
1 21 21 21 1 21 21 21 21 2 21 21 21 21 21 2
Clock
driver
B1 to B52 : Black reference pixels
D1 to D6 : Dummy invalid pixels
1234
OS DS VDD ø R
6
ø1
1 page  
MN3611RE
CCD Linear Image Sensor
s Construction of the Image Sensor
The MN3611RE can be made up of the three sections of—a)
photo detector region, b) CCD transfer region (shift register),
and c) output region.
a) Photo detector region
• The photoelectric conversion device consists of an 11µm
floating photodiode and a 3µm channel stopper for each
pixel, and 2160 of these devices are linearly arranged side by
side at a pitch of 14µm.
• The photo detector's windows are 14µm × 14µm squares and
light incident on areas other than these windows is optically
shut out.
• The photo detector is provided with 52 optically shielded
pixels (black dummy pixels) which serve as the black
reference.
b) CCD Transfer region (shift register)
• The light output that has been photoelectrically converted is
transferred to the CCD transfer for each odd and even pixel at
the timing of the shift clock (øSG). The optical signal electric
charge transferred to this analog shift register is successively
transferred out and guided to the output region.
• A buried type CCD that can be driven by a two phase clock
(ø1, ø2) is used for the analog shift register.
c) Output region
• The signal charge that is transferred to the output region is
sent to the detector where impedance transformation is done
using two source follower stages.
• The DC level component and the clock noise component not
containing optical signals are output from the DS pin.
• By carrying out differential amplification of the two outputs
OS and DS externally, it is possible to obtain an output signal
with a high S/N ratio by reducing the clock noise, etc.
s Timing Diagram
(1) I/O timing
ø SG
ø1
ø2
øR
DS
OS
(2) Drive timing
tSr
øSG
ø1 tSs tSW
Integration Time (Tint.)
1 2 3 4 6 7 8 9 10 11 58 59 60 61 62 63 64 65 66 2222 2224 2226
2223 2225
1 2 34
6 7 8 B1 B2 B50 B51 B52
Blank feed
(for 8 pixels)
2159
D1 D2 D3
Black reference
R1 G1 B1
2160D4 D5 D6
pixel signal
Valid pixel signal
(for 52 pixels)
(for 2160 pixels)
Note) Repeat the transfer
pulses (cp) for
more than 1114
periods.
tSf
90%
10%
90%
tSh
Invalid pixel signal
(for 3 pixels)
Invalid pixel signal
(for 3 pixels)
90%
ø1
10%
tCr tCf
90%
ø2 50%
10%
tRS
90%
t Rh
øR 50%
10%
tRr tRW
tRf
DS
tOS T
OS
90%
Reference level
Signal output voltage
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet MN3611RE.PDF ] | |
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