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TM
Peripheral Imaging Corporation
PI317MC-A6 300DPI CIS Module Engineering Data Sheet
Key Features
* Light source, lens, and sensor are integrated into a single module * 11.8 dpm resolution, 104 mm scanning length * Up to 250 sec/line scanning speed, with 5MHz pixel rate * 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 PI317MC-A6 is a contact imaging sensor, CIS, module, which is composed of 13 PI3021 sensor chips. The PI3021 is a 300 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 PI317MC-A6 is suitable for scanning A6 size (104 mm) documents with 11.8 dots per millimeter resolution. Applications include ticket, check and card scanners, variety of mark readers, and other automation equipment.
Functional Description
The PI317MC-A6 imaging array consists of 13 sensors that are cascaded to provide 1248 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
PAGE 1 of 6 PI317MC-A6, 05/01/01
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 PI317MC-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 PI317MC-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. PI317MC-A6 Cross Section
GLED LED LED LED LED LED LED LED LED
VLED
ROD LENS
1246
PHOTO SENSORS
1 2 3 4 5 ----------------
1247
1248
VIDEO LINE
VN(-V)
VDD (+5)
SHIFT REGISTER
GRD
BUFFER
VIDEO AMPLIFIER
VOUT
CP
SP
GRD
Figure 2. PI317MC-A6 module block diagram. (See Table 1 below)
PAGE 2 of 6 PI317MC-A6, 05/01/01
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
Table 1. Pin configuration
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 Operating Environment Operating temperature Operating humidity Storage temperature Storage humidity
Maximum Rating 10 50 -15 10 5.5 500 Vdd - 0.5V -0.6
Units V ma V ma V ma V V
Top Hop Tstg Hstg
0 to 50 10 to 85 -25 to+75 5 to 95
C % C %
Electro-Optical Characteristics (25 C) Table 2. Electro-optical characteristics at 25 C.
Parameter Symbol Number of photo detectors Pixel to pixel spacing Parameter 1248 84.7 Units elements m Note
PAGE 3 of 6 PI317MC-A6, 05/01/01
Line scanning rate
Tint (1)
250
sec MHz V % % mV mV %
@ 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 Modulation transfer function (7)
f Video Output Up Uadj Ud Vd MTF
5.0 1.0 +/-0.1 <+/-30 <25 <100 <450 >40
Definition: (1) Tint: Line scanning rate or integration time. Tint is determined by the interval of two SP, start pulses. (2) f: main clock frequency, (3) Vpavg = Vp(n)/1248; where n=1, 2, 3....., 1248 (4) Up = [(Vpmax - Vpavg) / Vpavg] x 100% or [(Vpavg - Vpmin) / Vpavg] x 100% where Vpmax = the maximum V(n) and Vpmin = the minimum V(n) (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 voltage, LED off. Vdmax is the maximum output voltage, LED off. (7) MTF = [(Vpmax - Vpmin) / (Vpmax + Vpmin)] x 100[%]; tested on a 75 lp/inch target. Vpmax: maximum output voltage Vpmin: minimum output voltage lp / inch: line pair/inch Recommended Operating Conditions (25 C)
Item Power Supply Symbol Vdd Vn. VLED Idd Ivn ILED Vih Vil f Min 4.5 -4.5 Mean 5.0 -5 5 47 6.0 450 Vdd-.5 Max 5.5 -12 55 10.0 500 Vdd 0.8 5.0 Units V V V ma ma ma V V MHz %
Input voltage at digital high Input voltage at digital low Clock frequency Clock pulse high duty cycle
Vdd-1.0 0 25
PAGE 4 of 6 PI317MC-A6, 05/01/01
Clock pulse high duration Integration time Operating temperature
ns ms 25 C * Tint (Min) is the lowest line integration time available with 5.0 MHz clock rate. Tint Top 5.0 50
50 0.25
Switching Characteristics (25C)
to CP tprh tdh SP tds Vout tsh tdl
tw
MODULE TIMING DIAGRAM
The switching characteristics for the I/O clocks are shown in the above timing diagrams. See timing symbol definitions in the following table. 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. 0.20 50 25 15 20 20 50 120 Typical Max. 4.0 75 Units s ns % ns ns ns ns ns
Symbol Definitions for the Above Timing Diagram
PAGE 5 of 6 PI317MC-A6, 05/01/01
PI317MC-A6 Module and Its Mechanical Dimensions
19 pin 1
.5m
m
12
m 0m PC B
14
.0m
m
J
in 0p 3-E x 1 125L mm P-S 5 1.2 Z-10 1AE
RE
AD
LI
NE
mm
6.0
g
s las
su
rfa
ce
Pictorial of the Plastic A6 Housing Size
The sketch of this module is to provide a pictorial of the module size and structure. A detailed drawing is available upon request.
(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.
PAGE 6 of 6 PI317MC-A6, 05/01/01

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