PI201M-A4 [AMI]
200DPI CIS Sensor; 200DPI CIS传感器
| 型号： | PI201M-A4 |
| 厂家： | 
AMI SEMICONDUCTOR |
| 描述： | 200DPI CIS Sensor |
| 文件： | 总6页 (文件大小：731K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
™
Peripheral
Imaging
Corporation
PI201M-A4 CIS Module
200DPI CIS Sensor
Engineering Data Sheet
Key Features
• Light source, lens, and sensor are integrated into a single module
• 8 dpm resolution, 216 mm scanning length
• 1.72 ms/line scanning speed
• Wide dynamic range Analog output
• Yellow-Green light source
• Compact size – 14 mm x 19.5 mm x 232 mm
• Low power
• Light weight
General Description
The PI201M-A4 is a CIS module. It is a long contact image sensor, using MOS image
sensor technology for high-speed performance and high sensitivity. The PI201M-A4 is
suitable for scanning A4 size (216 mm) documents with 8 dots per millimeter resolution.
Applications include document scanners, mark readers, and other office automation
equipment.
Functional Description
DOCUMENT SURFACE
GLASS WINDOW
The PI201M-4A imaging array consists of
27 sensors that are cascaded to provide
1728 photo-detectors with their associated
multiplex switches, and a digital shift
register that controls its sequential
readout. Mounted in the module is one-to-
one graded indexed micro lens array that
focuses the scanned documents to image
onto its sensing plane. The on-
board amplifier processes the video signal
to produce a sequential stream of video at
the video output pin of the PI201M-A4
module.
LIGHT PATH
SENSORS
PCB
INSIDE PICTORIAL OF MODULE
Figure 1. PI201M-A4 Cross Section
PAGE 1 OF 6 PI201M-A4, 7/17/99
Illumination is by means of an integrated LED light source. All components are housed in
a small plastic housing which has a cover glass which acts as the focal point for the object
being scanned and
protects the imaging
array, micro lens
GLED
LED
LED
LED
LED
LED
LED
LED
LED
assembly, and LED
light source from dust.
I/O to the module is
the 10-pin connector
located on one end of
the module. The cross
section of the
PI201M-A4 is shown
in Figure 1 and the
block diagram in
VLED
ROD LENS
1726
1728
1727
PHOTO SENSORS
VIDEO
LINE
1
2
3
4
5
- - - - - - - - - - - - - - - -
VN(-V)
VDD (+5)
GRD
SHIFT REGISTER
BUFFER
VIDEO AMPLIFIER
VOUT
Figure 2.
CP
SP
GRD
Figure 2. PI201M-A4 module block diagram
Absolute Maximum Rating:
Parameter
Power supply voltage
Symbols
Vdd
Maximum Rating
10
Units
V
Idd
Vn
40
-15
mA
V
In
VLED
ILED
10
5.25
650
Vdd – 0.5V
-0.8
mA
V
ma
V
Input clock pulse (high level) Vih
Input clock pulse (low level) Vil
V
Recommended Operating Conditions (25 °C)
Item
Power Supply
Symbol
Vdd
Vn.
Min
4.5
-4.5
Typical
5.0
-5
Max
5.5
-12
Units
V
V
VLED
Idd
Ivn
ILED
Vih
Vil
5
11
6.0
350
Vdd-.5
V
30
ma
ma
ma
V
V
MHz
10.0
550
Vdd
0.8
Input voltage at digital high
Input voltage at digital low
Clock frequency
Vdd-1.0
0
f
1.0 (1)
PAGE 2 OF 6 PI201M-A4, 7/17/99
Clock pulse high duty cycle
Clock pulse high duration
Integration time
25
250
1.728
%
ns
ms
0C
Tint
Top
10.0
50
Operating temperature
25
Note (1) the module will produce video above 1.5 MHz, but with adjacent pixel smearing.
Hence, with signal degradation it can be used above 1.5MHz.
Operating Environment
Operating temperature
Operating humidity
Storage temperature
Storage humidity
Top
Hop
Tstg
Hstg
0 to 50
0C
%
10 to 85
-25 to+75
10 to 90
0C
%
Electro-Optical Characteristics (25° C)
Table 2. Electro-optical characteristics at 25 ° C.
Parameter
Symbol
Tint(1)
Parameter
1728
125
Units
elements
mm
Note
Number of photo detectors
Pixel to pixel spacing
Line scanning rate
1.728
ms
@ 1.0 MHz
clock
frequency
Clock frequency(2)
Bright output voltage(3)
Bright output
1.0
0.6
<+/-30
MHz
Volts
%
nonuniformity(4)
Adjacent pixel
<25
%
nonuniformity(5)
Dark nonuniformity(6)
Dark output voltage(6)
Modulation transfer
function(7)
<200
<200
>30
mV
mV
%
Definition:
(1) Tint: line scanning rate or integration time. Tint is d
(SP).
etermined by the intervatlwoof start pulse
(2) f: main clock frequency,
(3) Vpavg = å Vp(n)/1728
(4) Up = [(Vpmax - Vp) / Vp] x 100% or [(Vp - Vpmin) / Vp] x 100%
PAGE 3 OF 6 PI201M-A4, 7/17/99
(5) Upadj = MAX[ | (Vp(n) - Vp(n+l) | / Vp(n)] x 100%
Upadj is the nonuniformity percentage pixel to pixel
(6) Ud = Vdmax - Vdmin
Vdmin is the minimum output on a black document(O.D.=0.8)
Vdmax: maximum output voltage of black document (O.D.= 0.8)
(7) MTF = [(Vmax - Vmin) / (Vmax + Vmin)] x 100 [%]
Vmax: maximum output voltage at 4.0 lp/mm
Vmin: minimum output voltage at 4.0 lp/mm
(8) lp / mm: line pair per mm
(9) O.D. Optical Density
Switching Characteristics (250C)
tw
to
CP
tprh
SP
tdh
tds
tdl
Vout
tsh
MODULE TIMING DIAGRAM
Note: See timing symbol definitions in the following table.
Symbol Definitions for the Above Timing Diagram
Item
Symbol
to
tw
Min.
Typical
Max.
4.0
Units
ms
ns
%
ns
Clock cycle time
Clock pulse width
Clock duty cycle
Prohibit crossing time of tprh
Start Pulse
1.0
250
25
75
15
Data setup time
Data hold time
Signal delay time
Signal settling time
tds
tdh
tdl
20
20
50
350
ns
ns
ns
ns
tsh
PAGE 4 OF 6 PI201M-A4, 7/17/99
Table 1. Pin configuration
Pin Number
Symbol
Names and Functions
Analog Video Output
Ground; 0V
1
2
Vout
Gnd
3
4
5
6
7
8
9
10
Vdd (+5V)
Vn (-5V to –12V)
Gnd
SP
Gnd
CP
Positive power supply
Negative power supply
Ground; 0V
Shift register start pulse
Ground; 0V
Sampling clock pulse
Ground for the light source; 0V
Supply for the light source
GLED
VLED
Mechanical Module Dimensions
For the PI201M-A4 module housing and its mechanical dimensions see the attached full
page size.
Printed in USA. All rights reserved. Specifications
©1999 AMI Semiconductor.
are subject to change without notice. Contents may not be reproduced in whole or in part without
the express prior written permission of AMIS. Information furnished herein is believed to be
accurate and reliable. However, no responsibility is assumed by AMIS for tis use nor for any
infringement of patents or other rights granted by implication or otherwise under any patent
or patent rights of AMIS.
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