MN3674 Panasonic, MN3674 Datasheet

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MN3674

Manufacturer Part Number
MN3674
Description
Color CCD Linear Image Sensor with 512 Pixels for R and B Colors/1024 Pixels for G Color
Manufacturer
Panasonic
Datasheet
MN3674
Color CCD Linear Image Sensor
with 512 Pixels for R and B Colors/1024 Pixels for G Color
CCD Linear Image Sensor
The MN3674 is a high responsivity CCD color linear image sensor
with 512 pixels each for R and B and 1024 G pixels, and having low
dark output floating photodiodes in the photodetector region and
CCD analog shift registers for read out.
It can read a 64mm-width color document with a high quality and a
maximum pseudo resolution of 400dpi. In addition to being used as a
color sensor, this device can also be used as a black and white sensor
if only the G row is used, and in this case, it is possible to read a
64mm-width document with a full resolution of 400dpi. Since a one
line delay analog memory is built in so as to compensate for the
difference in the positions of reading out between the R, B rows and
the G row, the configuration of the signal processing circuit becomes
simpler.
registers for read out are integrated in a single chip.
separation.
rows for the R, B colors and the G color, the device has a built in
analog memory that can store the signals of one line of the R-B
colors row.
voltage very low.
etc.
All clock inputs can be driven by 5V CMOS logic.
Large signal output of typically 0.8V at saturation can be obtained.
Color graphic read out in color image scanners, color fax machines,
Use of photodiodes with a new structure has made the dark output
2048 floating photodiodes and n-channel buried type CCD shift
RGB primary colors type on chip color filters are used for color
In order to compensate for the distance between the photodiode
Overview
Features
Application
Pin Assignments
NC
NC
OS
DS
V
ø
ø
ø
V
V
NC
SS
SS
SS
1
SG1
R
1
1
C26
WDIP022-G-0470B
10
11
1
2
3
4
5
6
7
8
9
(Top View)
1024
1
22
21
20
19
18
17
16
15
14
13
12
NC
NC
OS
DS
V
NC
ø
ø
ø
NC
NC
DD
SG2
2
V
2
2

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MN3674 Summary of contents

Page 1

... Color CCD Linear Image Sensor with 512 Pixels for R and B Colors/1024 Pixels for G Color Overview The MN3674 is a high responsivity CCD color linear image sensor with 512 pixels each for R and B and 1024 G pixels, and having low dark output floating photodiodes in the photodetector region and CCD analog shift registers for read out ...

Page 2

... B1 to B32 : Black reference pixels Dummy invalid pixels =0V) SS Symbol opr T stg =0V) SS Condition DD ø H (ø , ø ø (ø (ø , ø ) SG1 SG2 SL RH (ø MN3674 ø ø ø 2 SG2 512 512 1023 1024 ø ø SG1 SS SS Rating Unit – 0 – 0 ˚ ˚ ...

Page 3

... MN3674 • Timing conditions (without 1-line delay operation) (Ta 60˚C) Parameter Symbol Shift register clock frequency Reset clock frequency (=data rate) t Shift register clock rise time Shift register clock fall time Vertical transfer clock rise time t Vertical transfer clock fall time ...

Page 4

... OS1, Dark condition, see Note 5 OS2, Dark condition, see Note 5 OS1, Dark condition, see Note 6 1 OS2, Dark condition, see Note 6 2 Note 7 is the average output voltage of the valid pixels of each of the colors ave MN3674 min typ max Unit pF 200 — — ...

Page 5

... MN3674 Optical Characteristics (continued) Note 3) Saturation output voltage: This is the output voltage at the point beyond which it is not possible to maintain the linearity of the photoelectric conversion characteristics as the exposure is increased. (The exposure at this point is called the saturation exposure.) Note 4) Saturation Exposure (SE) This is the exposure beyond which it is not possible to maintain the linearity of the output voltage as the exposure is increased ...

Page 6

... CCD Linear Image Sensor Construction of the Image Sensor The MN3674 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 (isolation region) per pixel, and such pixels are arranged in a linear row with a pitch of 14µ ...

Page 7

... MN3674 Timing Diagram • I/O timing (1) (without 1-line delay operation) ø SG1 ø V ø SG2 ø 1 ø 2 ø Black reference pixels Dummy invalid pixels 1 8 • I/O timing (2) (during 1-line delay operation) ø SG1 ø V ø SG2 ø 1 ø 2 ø Black reference pixels ...

Page 8

... SG1f t SG1w SG2r SG2f SG2s 90% t 50% SG2w 10% 50% t SG2h and ø are identical SG1r SG1f 90% t 50% SG1w 10 90% t SG2r SG2f 50% 10 SG2w Vh and ø are identical MN3674 50% ...

Page 9

... MN3674 • Drive timing (3) (during repeated pattern) ø 2 ø 1 ø ( ( Graphs and Characteristics Spectral Response Characteristics 100 400 90% 10 90% 50% 10 50% Effective signal output period Green Red Blue 500 600 700 800 Wavelength (nm) CCD Linear Image Sensor 90% 50% 10% Reference level ...

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