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TM
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
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-toone graded indexed micro lens array that focuses the scanned documents to image onto its sensing plane. The onboard amplifier processes the video signal to produce a sequential stream of video at the video output pin of the PI201M-A4 module.
DOCUMENT SURFACE
GLASS WINDOW
LIGHT PATH MODULE HOUSE
ROD LENS
D LE
R BA
SENSORS
PCB
INSIDE PICTORIAL OF MODULE
Figure 1. PI201M-A4 Cross Section
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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 GLED LED LED LED LED LED LED LED LED array, micro lens assembly, and LED VLED light source from dust. ROD LENS I/O to the module is 1726 1728 the 10-pin connector 1727 PHOTO SENSORS VIDEO LINE located on one end of 1 2 3 4 5 ---------------VN(-V) the module. The cross VDD (+5) section of the SHIFT REGISTER PI201M-A4 is shown GRD in Figure 1 and the BUFFER VIDEO AMPLIFIER VOUT block diagram in Figure 2.
CP SP GRD
Figure 2. PI201M-A4 module block diagram
Absolute Maximum Rating:
Symbols Vdd Idd Vn In VLED ILED Input clock pulse (high level) Vih Input clock pulse (low level) Vil Parameter Power supply voltage Maximum Rating 10 40 -15 10 5.25 650 Vdd - 0.5V -0.8 Units V mA V mA V ma V V
Recommended Operating Conditions (25 C)
Item Power Supply Symbol Vdd Vn. VLED Idd Ivn ILED Vih Vil f Min 4.5 -4.5 Typical 5.0 -5 5 11 6.0 350 Vdd-.5 Max 5.5 -12 30 10.0 550 Vdd 0.8 1.0 (1) Units V V V ma ma ma V V MHz
Input voltage at digital high Input voltage at digital low Clock frequency
Vdd-1.0 0
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Clock pulse high duty cycle 25 % Clock pulse high duration 250 ns Integration time Tint 1.728 10.0 ms 0 Operating temperature Top 25 50 C 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 10 to 85 -25 to+75 10 to 90
0
C % 0 C %
Electro-Optical Characteristics (25 C)
Table 2. Electro-optical characteristics at 25 Parameter Number of photo detectors Pixel to pixel spacing Line scanning rate 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) Definition: (1) Tint: line scanning rate or integration time. Tint is d etermined by the interval of start pulse two (SP). (2) f: main clock frequency, (3) Vpavg = Vp(n)/1728 (4) Up = [(Vpmax - Vp) / Vp] x 100% or [(Vp - Vpmin) / Vp] x 100%
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C. Parameter 1728 125 1.728 Units elements m ms Note
Symbol
Tint(1)
@ 1.0 MHz clock frequency
1.0 0.6 <+/-30 <25 <200 <200 >30
MHz Volts % % mV mV %
(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)
to CP tprh tdh SP tds Vout tsh
tw
tdl
MODULE TIMING DIAGRAM
Note: See timing symbol definitions in the following table.
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. 1.0 250 25 15 20 20 50 350
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Typical
Max. 4.0 75
Units s ns % ns ns ns ns ns
Table 1. Pin configuration
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
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 (c)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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