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TM
Peripheral Imaging Corporation
PI240MC-A4 200DPI CIS Module Engineering Data Sheet
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Key Features
Inverted Video Signals (magnitude increases in a negative direction) Light source, lens, and sensor are integrated into a single module 8 dpm resolution 216 mm scanning length 0.347ms/line scanning speed, operated @ 5.0MHz Wide dynamic range Analog output 660nm light source Compact size: 14 mm 19.5 mm x 232 mm Low power Light weight
General Description
The PI240MC-A4 is a contact imaging sensor, CIS, module, which is composed of 1728 PI3020 sensor chips. The PI3020 is a 200 DPI solid-state line imaging array, also a product of Peripheral Imaging Corporation. This imaging device is fabricated using MOS imaging sensor technology for high-speed performance and high sensitivity. The PI240MC-A4 is suitable for scanning A4 size (216 mm) documents with 8 dots per millimeter resolution. Applications include variety of document scanners, variety of mark readers, and other automation equipment.
Functional Description
The PI240MC-A4 imaging array consists of 27 chips that are cascaded to provide 1728 photodetectors with their associated multiplex DOCUMENT SURFACE GLASS WINDOW switches, and a digital shift register that controls its sequential readout. Mounted LIGHT PATH in the module is one-to-one graded R indexed micro lens array that focuses the BA ED L scanned documents to image onto its sensing plane. The on-board amplifier SENSORS processes the video signal to produce a sequential stream of video at the video PCB output pin of the PI240MC-A4 module.
MODULE HOUSE
INSIDE PICTORIAL OF MODULE
Figure 1. PI240MC-A4 Cross Section
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ROD LENS
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 GLED protects the imaging LED LED LED LED LED LED LED LED array, micro lens assembly, and LED light VLED source from dust. I/O to ROD LENS the module is the 10-pin 1726 1728 1727 PHOTO SENSORS VIDEO connector located on one LINE 1 2 3 4 5 ---------------end of the module. See VN(-V) Figure 4. The VDD (+5) Mechanical Structure. SHIFT REGISTER GRD The cross section of the BUFFER VIDEO AMPLIFIER VOUT PI240MC-A4 is shown in Figure 1 and the block diagram in Figure 2.
CP SP GRD
Figure 2. PI240MC-A4 Module Block Diagram
Recommended Operating Conditions (25 C)
Item Power Supply Symbol Vdd Idd Vn Ivn VLED ILED Vid Vih Vil F Min 4.5 24 -4.5 5 4.5 305 0.8 Vdd -1.0 0 25 50 0.346 Typical 5.0 30 -5 6 5.0 430 1.0 Vdd -0.5 3.0 Max 5.5 35 -15 8 5.5 560 1.2 Vdd 0.8 5.0 Units V ma V ma V ma V V V MHz % ns ms 0 C
Video Output Level Input voltage at digital high Input voltage at digital low Clock frequency Clock pulse high duty cycle Clock pulse high duration Integration time Operating temperature
Tint(1) Top
0.6 25
10.0 50
Note (1). Tint is determined by time interval between two start pulses, SP. The longest integration time is determined by the degree of leakage current degradation that can be tolerated by the system. A 10ms maximum is a typical rule-of-thumb hence the experienced CIS user can use his discretion in determining the integration time.
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Electro-Optical Characteristics (25 C)
Parameter Symbol Number of photo detectors Pixel-to-pixel spacing Line scanning rate(1) Tint Parameter 1728 125 347 Units elements m sec Note
@ 5.0 MHz clock frequency
Clock frequency(2) Bright output voltage(3) Bright output nonuniformity(4) Adjacent pixel nonuniformity(5) Dark nonuniformity(6) Dark output voltage(6) Modulation transfer function(7)
freq Vp Up Uadj Ud Vd MTF
5.0 1.0 <+/-30 <25 <100 <150 >30
MHz Volts % % mV mV %
Definition: (1) Tint: line scanning rate or integration time. Tint is determined by the interval of two start pulses (SP). (2) freq is the main clock frequency. (3) Vpavg = Vp(n)/1728 (4) Up = [(Vpmax - Vp) / Vp] x 100% or [(Vp - Vpmin) / Vp] x 100% (5) Upadj = MAX[ | (Vp(n) - Vp(n+l) | / Vp(n)] x 100% Upadj is the nonuniformity percentage of adjacent pixels (6) Ud = Vdmax - Vdmin Vd is the voltage amplitude between the output video's reset level and its dark level. Vdmin is the minimum output with LED light off. Vdmax: maximum output voltage with the LED light off. (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
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Switching Characteristics (250C) Figure 3
to CP tprh tdh SP tds Vout tsh tdl tw
MODULE TIMING DIAGRAM
Symbol Definitions for the Above Timing Diagram
Item Clock cycle time Clock pulse width Clock duty cycle Prohibit crossing time of Start Pulse Data setup time Data hold time Signal delay time Signal settling time Symbol to tw tprh tds tdh tdl tsh Min. 0.2 50 25 15 20 20 50 90 Typical Max. 4.0 75 Units ms ns % ns ns ns ns ns
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Absolute Maximum Rating:
Parameter Power supply voltage Symbols Vdd Idd Vn In VLED ILED Input clock pulse (high level) Vih Input clock pulse (low level) Vil Maximum Rating 10 30 -15 15 6 650 Vdd - 0.5V -0.5 Units V mA V mA V ma V V
Note (1): These parameters are absolute maximums and should not be used to operate the module.
Operating Environment
Operating temperature Operating humidity Storage temperature Storage humidity Top Hop Tstg Hstg 0 to 50 10 to 85 -25 to+75 10 to 90
0
C % 0 C %
Mechanical Considerations I/O Connector Pin configuration
Connector is a 1.25mm 10 pin JAE IL-Z-10P-S125L3-E. Its location, along with its pin 1 location, are shown in Figure 4 The Mechanical Structure. Pin Number 1 2 3 4 5 6 7 8 9 10 Symbol Vout Gnd Vdd (+5V) Vn (-5V to -12V) Gnd SP Gnd CP GLED VLED Names and Functions Analog video output Ground; 0V 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
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Module Housing Dimensions
The PI240MC-A4 module outline and its mechanical dimensions are shown. A detailed housing drawing is available upon request.
SC .5 82 23 .5 2 D
AN CT
IO
N
E IR
82
PIN
1 M 5M 10 PIN
END VIEW
190.3 180.3 14.6 5.80.3 SIDE TAPE
CO 6.0 D LIN E
E NN
CT
OR
1.2
A RE
o2.20.05 HOLE 2X2 - M2.6 TAPSIZE USE (DP6)
THE SURFACE OF THE GLASS 15.50.05 1.25
ALL DIMENSIONS IN MM UNLESS OTHERWISE SPECIFIED
MECHANICAL STRUCTURE FIGURE 4
(c)2001 Peripheral Imaging Corporation. Printed in USA. All rights reserved. Specifications are subject to change without notice. Contents may not be reproduced in whole or in part without the express prior written permission of Peripheral Imaging Corporation. Information furnished herein is believed to be accurate and reliable. However, no responsibility is assumed by Peripheral Imaging Corporation for its use nor for any infringement of patents or other rights granted by implication or otherwise under any patent or patent rights of Peripheral Imaging Corporation.
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