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Peripheral Imaging Corporation
PI223MC-A6 CIS Module 200DPI CIS Sensor Engineering Data Sheet
Key Features * Light source, lens, and sensor are integrated into a single module * 8 dpm resolution, 104 mm scanning length * High Speed Page Scan - up to 167 sec/line @ 5MHz pixel rate with internal optical modification (optional feature). * Wide dynamic range * Analog output * Yellow-green LED light source * Compact size 14 mm x 19 mm x 120 mm * Low power * Light weight
General Description
The PI223MC-A6 is a contact imaging sensor, CIS, module, which is composed of 13 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 PI223MC-A6 is suitable for scanning A6 size (104 mm) documents with 8 dots per millimeter resolution. Applications include ticket, check and card scanners, variety of mark readers, and other automation equipment.
Functional Description
The PI223MC-A6 imaging array consists of 13 sensors that are cascaded to provide 832 photo-detectors with their associated multiplex switches, and a digital shift register that
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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 PI223MC-A6 module. 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 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 PI223MC-A6 is shown in Figure 1 and the block diagram in Figure 2.
DOCUMENT SURFACE GLASS WINDOW
LIGHT PATH MODULE HOUSE
ROD LENS
D LE
R BA
SENSORS
PCB
INSIDE PICTORIAL OF MODULE
Figure 1. PI223MC-A6 Cross Section
GLED LED LED LED LED LED LED LED LED
VLED
ROD LENS
830
PHOTO SENSORS
1 2 3 4 5 ----------------
831
832
VIDEO LINE
VN(-V)
VDD (+5)
SHIFT REGISTER
GRD
BUFFER
VIDEO AMPLIFIER
VOUT
CP
SP
GRD
Figure 2. PI223MC-A6 module block diagram
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Table 1. Pin Configuration Pin Number Symbol 1 Vout 2 Gnd 3 Vdd (+5V) 4 Vn (-5V to -12V) 5 Gnd 6 SP 7 Gnd 8 CP 9 GLED 10 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
Table 2. Absolute Maximum Rating: Parameter Symbols Power supply voltage Vdd Idd Vn In VLED ILED Input clock pulse (high level) Vih Input clock pulse (low level) Vil Table 3. Operating Environment Operating temperature Top Operating humidity Hop Storage temperature Tstg Storage humidity Hstg
Maximum Rating 7.5 40 -15 15 5.5 500 Vdd - 0.5V -0.6
Units V ma V ma V ma V V
0
0 to 50 10 to 85 -25 to+75 5 to 95
C % 0 C %
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Electro-Optical Characteristics (25 C) Table 4. Electro-optical characteristics at 25 C.
Parameter Symbol Number of photo detectors Pixel to pixel spacing Line scanning rate Tint(1) Parameter 832 125 420 Units elements m sec MHz Note
Clock frequency(2)
f
2
Bright output voltage(3)
Video Output
1.0
V
@ 2 MHz clock frequency See note 2 for 5.0 MHz operation. Specified for 420sec.
Bright output nonuniformity(4) Adjacent pixel nonuniformity(5) Dark nonuniformity(6) Dark output voltage Modulation transfer function(7)
Up Uadj Ud Vd MTF
<+/-30 <25 <20 <200 >50
% % mV mV %
See note 7 for MTF & DOF.
Definition: (1) Tint: Line scanning rate or integration time. Tint is determined by the interval of two SP, start pulses. See note 2 for the high scanning speed operation. (2) f: main clock frequency. The call out is at 2.0 MHz, but electrically it reliably operates to 5.0 MHz. However, it must be optically modified to obtain the minimum integration time of 167 sec. This modification is offered as a user's option. (3) Vpavg = Vp(n)/832 (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 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 [%]. DOF range is defined with the MTF. MTF is measure at glass surface and at 0.4mm from the glass > 50% and peaks at approximately mid-point of 0.2mm. Vmax: maximum output voltage at 50 lp/inch (At 1/2 of the optical Nyquest Frequency) Vmin: minimum output voltage at 50 lp/inch (8) O.D. = Optical Density (9) lp / inch: line pair per inch
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Table 5. Recommended Operating Conditions (25 C)
Item Power Supply Symbol Vdd Vn. VLED Idd In ILED Vih Vil f Min 4.5 -4.5 Mean 5.0 -5 5 22 6 400 Vdd-.5 2.0 25 50 0.167 25 Max 5.5 -12 5.5 40 15 450 Vdd 0.6 5.0 Units V V V ma ma ma V V MHz % ns ms 0 C
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
370 Vdd-1.0 0
Tint Top
5.0 50
* Tint (Min) is the lowest line integration time available at 5.0 MHz clock rate with internal optical modifications. See note 2 under Table 4.
Switching Characteristics (25C)
to CP tprh tdh SP tds Vout tsh tdl tw
MODULE TIMING DIAGRAM
Figure 3. Clock and Start pluse Timing Diagram The switching characteristics for the I/O clocks are shown in Figure 3. Its corresponding timing symbol definitions are given in Table 5, below.
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Table 5. Symbol Definition for the Above Timing Diagram Item Symbol Min. Clock cycle time to 0.2 Clock pulse width tw 50 Clock duty cycle 25 Prohibit crossing time of Start tprh 15 Pulse Data setup time tds 20 Data hold time tdh 20 Signal delay time tdl 50 Signal settling time tsh 120
Typical
Max. 4.0 75
Units s ns % ns ns ns ns ns
PI223MC-A6 Module and Its Mechanical Dimensions The sketch of this module is to provide a pictorial of the module size and structure. A detailed drawing is available upon request.
19 pin 0 12 mm 1
.5m
m
14
.0m
m
PC
B
in 0 p 3-E x 1 25L mm P-S1 5 1.2 -10 -Z E1 JA rfa ce
A RE
DL
IN
E
gla ss su
6.0
mm
Pictorial of the Plastic Standard A6 Housing Size
(c)2000 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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