AMI AMIS-710627-A4

AMIS-710627-A4, AMIS-710628-A4, AMIS-710629-A4:
Data Sheet
600dpi CIS Modules
1.0 General Description
The AMIS-710627-A4 (PI627MC-A4), AMIS-710628-A4 (PI628MC-A4) and AMIS-710629-A4 (PI629MC-A4) are a family of contact
image sensor (CIS) modules, using MOS image sensor technology for high-speed performance and high sensitivity. They contain a
complete optical imaging system that includes the light source and focusing elements.
The modules’ contact image sensor is divided into four sections, each with its own video output and identical processing circuits
allowing for high scanning speeds. Each module comes with its own particular LED light source, which have different maximum light
power outputs. Since the light power limits the exposure, which is proportional to the product of scanning speed and light power, each
module will have a different maximum scanning speed and signal output voltage.
The modules can be used for scanning A4 size (216mm) documents with 23.62 dots per millimeter (dpm) resolution. Applications
include document scanning, mark readers, gaming, and office automation equipment.
2.0 Key Features
•
•
•
•
•
•
•
•
•
LED light source, lens and sensor are integrated into a single module
Ultra high-speed
Four parallel analog video outputs, clocked as high as 5.5MHz
270µsec/line scanning speed @ 5.0MHz clock rate for the red light source
23.62dots/mm resolution, 216mm scanning length
Wide dynamic range
Standard A4 size ≅ 14.5mm x 19.5mm x 232mm
Low power
Light weight
3.0 Functional Description
Each of the three modules consists of 27 AMIS-720639 (PI3039) image sensors cascaded together. Each sensor consists of 192
photo-sensing elements (pixels), resulting in a module 5184 pixels long.
These image sensors have associated multiplex switches that are sequentially accessed with its digital shift register. In addition, each
has a chip-select switch that functions to activate its preceding sensor on the cascaded sequence, after its predecessor chip has
completed its scan. The start pulse initiates the shift register of the first chip in all four sections. The first chip then sequentially clocks
out the integrated image charge from each pixel. These charges are passed through the sensors’ multiplexing switch and then out onto
the video line, where they are converted to a voltage. When the sensor completes its scan, the chip-select switch on the following chip
is switched on to continue the line scan until it completes its scan in one section. A new scan is initiated when a start pulse is again
entered into the first chip of each section.
The 27 sensors are cascaded together and bonded onto a PCB. The cascaded sensors are then divided into four subsections, each
subsection having its own output. The first three subsections contain seven sensors and the fourth contains six sensors. Each output is
then connected to its own video line. The four video lines form a video line capacitance, which are buffered by video amplifiers, to act
as output drivers. The charge from each output is integrated onto the video line capacitance and readout. Each pixel is then reset and
ready to integrate again.
Mounted in the module is a one-to-one graded indexed micro lens array that focuses the scanned documents to be imaged onto its
sensing plane.
Illumination is by means of an integrated LED light source. The particular LED for each module is listed in Table 1.
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AMIS-710627-A4, AMIS-710628-A4, AMIS-710629-A4:
Data Sheet
600dpi CIS Modules
Table 1: Module vs. LED Light Source
Module
LED Type
AMIS-710627-A4
660nm Red LED bar
AMIS-710628-A4
525nm Green LED bar
AMIS-710629-A4
Low-power Yellow-Green LED bar
All components are housed in a small plastic housing which has a glass cover that acts as the focal point for the object being scanned
and protects the imaging array, micro lens assembly, and LED light source from dust.
Figures 1 and 2 show a block diagram and a cross section of a module.
Figure 1: Module Block Diagram
Figure 2: Module Cross Section
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AMIS-710627-A4, AMIS-710628-A4, AMIS-710629-A4:
Data Sheet
600dpi CIS Modules
4.0 Connector Pin Out
Inputs and outputs to the module are via a 12-pin connector, part number JAE IL-Z-12P-S125L3-E, located on one end of the module.
Table 2 lists the connector pin-out with their symbols and descriptions.
Table 2: Pin Out Configuration
Connector Pin
Symbol
Number
1
VOUT1
2
VOUT2
3
GND
4
VOUT3
5
VOUT4
6
Vdd
7
SP(START)
8
GND
9
CP(CLOCK)
10
Vn
11
GLED
12
VLED
Description
Analog video output 1
Analog video output 2
Ground
Analog video output 3
Analog video output 4
Power supply
Shift register start pulse
Ground
Clock pulse
Negative power supply
Ground for the light source
Power supply for the light source
5.0 Absolute Maximum Rating
Table 3 shows the absolute maximum ratings for the parameters common to all three modules. As each module has its own particular
LED source, Table 4 shows the absolute maximum ratings particular to each of the three LED light sources. These are the absolute
maximum ratings and continuous operation is not recommended.
Table 3: Absolute Maximum Ratings Common to all Three Modules
Parameter
Symbol
Max. Rating
Power supply
Vdd
7
Idd
100
Vn
-15
In
20
Input clock pulse (high level)
Vih
Vdd - 0.5V
Input clock pulse (low level)
Vil
Table 4: LED Absolute Maximum Ratings
Parameter
AMIS-710627-A4 /
660nm Red LED
VLED
ILED
V
Max. Rating
AMIS-710628-A4 /
525nm Green LED
5.5
0.7
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-0.5
Units
V
mA
V
mA
V
Units
AMIS-710629-A4 /
Low-power
Yellow-Green LED
5.5
1.0
5.5
1.0
3
V
A
AMIS-710627-A4, AMIS-710628-A4, AMIS-710629-A4:
Data Sheet
600dpi CIS Modules
6.0 Environmental Specifications
Table 5 lists the environmental conditions for the modules.
Table 5: Operating and Storage Environment
Parameter
Max. Rating
Operating temperature
0 to 50
Operating humidity
10 to 90
Storage temperature
Storage humidity
-20 to+75
10 to 90
Units
°
C
%
°
C
%
7.0 Electro-Optical Characteristics at 25°C
Table 6 lists the electro-optical characteristics common to all three modules. Tables 7, 8 and 9 show the characteristics particular to
each of the three LED light sources.
Table 6: Electro-Optical Characteristics Common to all Three Modules
Parameter
Value
Units
Total number of pixels in each module
5184
Elements
Number of pixels in Sections 1, 2 & 3
1344
Elements
Number of pixels in Section 4
1152
Elements
Pixel-to-pixel spacing
42.3
µm
Module: AMIS-710627-A4
Light source: 660nm Red LED
Table 7: AMIS-710627-A4 / 660nm Red LED Electro-Optical Characteristics
Parameter
Symbol
Value
(1)
Line scanning rate
Tint
450
(2)
Clock frequency
(3)(7)
Bright output voltage
(4)
Bright output non-uniformity
Adjacent photo-response non(5)
uniformity
(6)
Dark non-uniformity
(7)
Dark output voltage
(8)
Modulation transfer function
Fclk
Video output
Up
Upn
3.0
0.5
< +/-30
<25
MHz
Volt
%
%
Ud
Dark level (DL)
MTF
< 100
< 350
> 40
mV
mV
%
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Units
µsec
4
Note
@ 3.0MHz clock
frequency
AMIS-710627-A4, AMIS-710628-A4, AMIS-710629-A4:
Data Sheet
600dpi CIS Modules
Module: AMIS-710628-A4
Light source: 525nm Green LED
Table 8: AMIS-710628-A4 / 525nm Green LED Electro-Optical Characteristics
Parameter
Symbol
Value
Units
(1)
Line scanning rate
Tint
270
µsec
(2)
Clock frequency
(3)(7)
Bright output voltage
(4)
Bright output non-uniformity
Adjacent photo-response non(5)
uniformity
(6)
Dark non-uniformity
(7)
Dark output voltage
(8)
Modulation transfer function
Fclk
Video Output
Up
Upn
5.0
0.5
< +/-30
<25
MHz
Volt
%
%
Ud
Dark Level (DL)
MTF
< 100
< 350
> 40
mV
mV
%
Note
@ 5.0MHz clock
frequency
Module: AMIS-710629-A4
Light source: Low-power Yellow-Green LED
Table 9: AMIS-710629-A4 / Low-power Yellow-Green LED Electro-Optical Characteristics
Parameter
Symbol
Value
Units
(1)
Line scanning rate
Tint
450
µsec
(2)
Clock frequency
(3)(7)
Bright output voltage
(4)
Bright output non-uniformity
Adjacent photo-response non(5)
uniformity
(6)
Dark non-uniformity
(7)
Dark output voltage
(8)
Modulation transfer function
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
Fclk
Video Output
Up
Upn
3.0
0.5
< +/-30
<25
MHz
Volt
%
%
Ud
Dark Level (DL)
MTF
< 100
< 350
> 40
mV
mV
%
Notes
@ 3.0MHz clock
frequency
Tint is the line-scanning rate or integration time and is determined by the interval between two start pulses, SP. The integration time listed for each module is the
minimum integration time required to give 0.5V output at each modules maximum clock frequency.
Fclk is the main clock frequency, also equals the pixel rate.
Video output level is dependent on the integration time and LED light power.
Up = [Vp(max) - Vpavg] / Vpavg x 100% or [Vpavg - Vp(min)] / Vpavg} x 100%, whichever is greater, where Vp(max) = maximum pixel level, Vp(min) = minimum
pixel level, and Vpavg = average of all pixels.
Adjacent photo-response non-uniformity (Upn).
Upn = Max ((Vpn – Vpn+1) / Min (Vpn, Vpn+1)) x 100%, where Vpn is the pixel output voltage of pixel n in the light.
Ud = Vdmax - Vdmin, where Vdmin is the minimum output voltage with LED off and Vdmax is maximum output voltage with LED on.
See the paragraph under Reset Level and Video Sampling Time for explanation.
See the paragraph under Depth of Focus. A graph of the typical MTF vs. Depth of Focus is shown.
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AMIS-710627-A4, AMIS-710628-A4, AMIS-710629-A4:
Data Sheet
600dpi CIS Modules
8.0 Recommended Operating Conditions at 25°C
Table 10 lists the recommended operating conditions common to all three modules. Table 11 lists the recommended operating
conditions particular to each of the three LED light sources.
Table 10: Recommended Operating Conditions at 25°C, Common to all Three Modules
Parameter
Symbol
Min.
Typ.
Power supply
Vdd (positive)
4.5
5.0
Vn (negative)
-10
-5
Idd (positive)
60
66
In (negative)
19
20
Input voltage (high level)
Vih
Vdd - 1.0
Vdd -0.5
Input voltage (low level)
Vil
0
(1)
Clock frequency
Fclk
0.518
Clock pulse high duty cycle
Duty
25
50
Clock pulse high duration
Pwck
46
(1)
Integration time
Tint
82
150
Operating temperature
Top
25
Table 11: Recommended Operating Conditions at 25°C, for each LED
LED Light Source
Parameter
Min.
660nm Red LED
VLED
ILED
Max.
5.5
-4.0
75
21
Vdd
0.6
5.5
75
50
Units
V
V
mA
mA
V
V
MHz
%
ns
µs
°
C
Typ.
5.0
480
Max.
5.5
550
Units
Volts
mA
525nm Green LED
VLED
ILED
5.0
TBD
5.5
TBD
Volts
mA
Low-power Yellow-Green LED
VLED
ILED
5.0
TBD
5.5
TBD
Volts
mA
Note:
1.
The maximum clock speed is limited by the modules light source power, due to the low light power associated with LED’s. The minimum clock speed is determined
by the longest tolerable integration time. Because of the leakage current build up, the integration time is recommended to be no greater than 10ms.
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AMIS-710627-A4, AMIS-710628-A4, AMIS-710629-A4:
Data Sheet
600dpi CIS Modules
9.0 Reset Level and Video Sampling Time
Figure 3: Reset Level and Sample Time
Figure 3 shows the video signal waveform and details a single pixel. The signal output waveform is shown referenced to the input clock
waveform. Also shown is the terminology used to define the dark and bright output levels and the recommended pixels sampling times.
The dark level is defined by using the module imaging on a black target or with the light source turned off. The dark level is then
measured from ground or 0V. The reset level is a reference level of the reset switch, which is not necessarily at ground. The reason for
this is that after the reset operation, the video signal is passed through an amplifier, which may have some offsets. The difference
between the dark level and reset level is called the pedestal, PED. Hence, the reset level will sit below the dark level.
The video pixels, demonstrated in this graph, are ideal waveforms from a CIS module using a phototransistor imaging structure. The
video output at high speeds, such as 5.0MHz, does not instantly rise to its final value, although, if it is given enough time it would
eventually approach its steady state value (in order of milliseconds). However, at high speeds it is impractical to wait until a final stable
value is reached. The suggested sampling point is therefore a few nanoseconds prior to the signal falling edge.
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AMIS-710627-A4, AMIS-710628-A4, AMIS-710629-A4:
Data Sheet
600dpi CIS Modules
10.0 Depth of Focus
Figure 4 shows the typical MTF versus Distance, which can be used to define the working depth of focus. Two curves indicate the
spread among the modules. Note that the MTF is greater than 40 percent out to a distance greater than 0.3mm from the glass surface.
Since this module is a 600dpi module, a pixel density of 600 pixels per inch, the MTF was measured with a 300dpi or a 150 line-pair per
inch optical bar pattern. The test was conducted with pixel rate set to 5.0MHz.
The effective algorithm used in the measurements is as described by the following equation:
MTF={[Vp(n)+Vp(n+1)]/2-[Vp(n+2)+Vp(n+3)]/2}/{[Vp(n)+Vp(n+1)]/2+[Vp(n+2)+Vp(n+3)]/2}
th
th
Where n is 1, 2, .....5184 , Vp(n) is the signal amplitude of the n pixel.
Figure 4: Typical MTF versus Distance
TYPICAL
MTF VS DEPTH OF FOCUS
M
TF
IN
%
60
50
40
30
20
10
0
0
0.2
0.4
0.6
DEPTH FROM THE WINDOW SURFACE(mm)
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AMIS-710627-A4, AMIS-710628-A4, AMIS-710629-A4:
Data Sheet
600dpi CIS Modules
11.0 Timing Characteristics at 25°C
The timing characteristics at 25°C for the I/O clocks are shown in Figure 5 and their definitions detailed in Table 12. Only one video
output is shown because all four video sections have identical electrical characteristics. Since there are seven die in sections one, two
and three and six die in Section 4, the output waveform for Section 4 (Vout 4) is shorter by 192 pixels.
Figure 5: Module Timing Diagram
Table 12: Timing Definitions
Item
Clock cycle time
Clock pulse width
Clock duty cycle
(1)
Prohibit crossing time of the SP
Data setup time
Data hold time
Signal delay time
Signal settling time
Symbol
to
tw
tprh
tds
tdh
tdl
tsh
Min.
0.182
46
25
50
50
50
50
100
Typ.
Max.
1.93
1448
75
Units
µs
ns
%
ns
ns
ns
ns
ns
Note:
1.
"Prohibit crossing of the start pulse", tprh, is to indicate that the start pulse should not be active high between two consecutive low going clock pulses. All falling
clock edges under an active high start pulse loads the internal shift register, therefore the start pulse must be active over only one falling clock edge. A high start
pulse crossing over any rising clock edges are ignored by the shift register. One simple way to ensure that the start pulse will not be actively high for any two
consecutive falling clock edges is to generate the start pulse on a rising clock edge and terminate it on the following rising clock edge.
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AMIS-710627-A4, AMIS-710628-A4, AMIS-710629-A4:
Data Sheet
600dpi CIS Modules
12.0 Mechanical Structure of the Module
Figure 6 is an overview of the module housing showing the connector location; the module’s approximate overall dimensions and its
general layout. It is not intended for use as a design reference. A detailed drawing for the any of the AMIS-710627-A4 / AMIS-710628A4 / AMIS-710629-A4 module housings is available upon request.
Figure 6: Module Mechanical Overview
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AMIS-710627-A4, AMIS-710628-A4, AMIS-710629-A4:
Data Sheet
600dpi CIS Modules
13.0 Company or Product Inquiries
For more information about AMI Semiconductor’s image sensors, please send an email to [email protected]
For more information about AMI Semiconductor’s products or services visit our Web site at http://www.amis.com.
Production Technical Data - The information contained in this document applies to a product in production. AMI Semiconductor and its subsidiaries (“AMIS”) have made every effort to ensure
that the information is accurate and reliable. However, the characteristics and specifications of the product are subject to change without notice and the information is provided “AS IS” without
warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant information to verify that data being relied on is the most current and complete. AMIS
reserves the right to discontinue production and change specifications and prices at any time and without notice. Products sold by AMIS are covered by the warranty and patent
indemnification provisions appearing in its Terms of Sale only. AMIS makes no other warranty, express or implied, and disclaims the warranties of noninfringement, merchantability, or fitness
for a particular purpose. AMI Semiconductor's products are intended for use in ordinary commercial applications. These products are not designed, authorized, or warranted to be suitable for
use in life-support systems or other critical applications where malfunction may cause personal injury. Inclusion of AMIS products in such applications is understood to be fully at the
customer’s risk. Applications requiring extended temperature range, operation in unusual environmental conditions, or high reliability, such as military or medical life-support, are specifically
not recommended without additional processing by AMIS for such applications. Copyright © 2006 AMI Semiconductor, Inc.
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