™ Peripheral Imaging Corporation PI325MC-A4 300DPI CIS Module Engineering Data Sheet Key Features • Light source, lens, and sensor are integrated into a single module • 11.8 dpm resolution, 216 mm scanning length • Up to 500µsec/line scanning speed with optional 5.2MHz pixel rate • Wide dynamic range • Analog output • Red (660nm) LED light source • Compact size ≅ 14 mm x 19.5 mm x 232 mm • Low power • Light weight General Description The PI325MC-A4 is a CIS module. It is a contact image sensor, using MOS image sensor technology for high-speed performance and high sensitivity. The PI325MC-A4 is suitable for scanning A4 size (216 mm) documents with 11.8 dots per millimeter resolution. Applications includes fax machines, game systems, variety of mark readers, and other automation equipment requiring document scanners. Functional Description The PI325MC-A4 imaging array consists of 27 sensors, PI3021 produced by Peripheral Imaging Corp, that are cascaded to provide 2592 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 micro lens array that focuses the scanned documents to image onto its sensing plane. The on-board amplifier processes the video PAGE 1 OF 6 - PI325MC-A4, 11-15-00 signal to produce a sequential stream of video at the video output pin of the PI325MC-A4 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 PI325MC-A4 is shown in Figure 1 and the block diagram in Figure 2. DOCUMENT SURFACE GLASS WINDOW ROD LENS MODULE HOUSE LIGHT PATH D LE R BA SENSORS PCB INSIDE PICTORIAL OF MODULE Figure 1. PI325MC-A4 Cross Section GLED LED LED LED LED LED LED LED LED VLED ROD LENS 2590 PHOTO SENSORS 1 2 3 4 5 2591 2592 ---------------- VIDEO LINE VN(-V) VDD (+5) SHIFT REGISTER GRD BUFFER CP VIDEO AMPLIFIER SP GRD Figure 2. PI325MC-A4 module block diagram. (See Table 1 for pin-out designations) PAGE 2 OF 6 - PI325MC-A4, 11-15-00 VOUT 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 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 55 -15 10 5.5 0.55 Vdd – 0.5V -0.8 Units V mA V mA V A V V Table 2. Absolute Maximum Ratings Operating Environment Operating temperature Operating humidity Storage temperature Storage humidity Top Hop Tstg Hstg 0 to 50 10 to 85 -25 to+75 5 to 95 Table 3. Operating Environment PAGE 3 OF 6 - PI325MC-A4, 11-15-00 0C % 0 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 2592 84.7 522 Units elements µm µsec Clock frequency (2) Bright output voltage Bright output nonuniformity (4) Adjacent pixel nonuniformity (5) Dark nonuniformity (6) Dark output voltage Modulation transfer function (7) f Video Output Up 5.0 1.0 <+/-30 MHz Volts % Uadj <25 % Ud Vd MTF <100 <150 >50 mV mV % Note @ 5.0 MHz clock frequency Definition: (1) Tint: Line scanning rate or integration time. Tint is determined by the interval of two SP, start pulses. The minimum integration time of 500us is available at 5.2 MHz pixel rate. (2) f: main clock frequency (3) Vpavg = ∑ Vp(n)/2592 (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 [%] Vmax: maximum output voltage at 75 lp/in Vmin: minimum output voltage at 75 lp/in (8) O.D. = Optical Density (9) lp / in: line pairs per inch PAGE 4 OF 6 - PI325MC-A4, 11-15-00 Table 5. Recommended Operating Conditions (25 °C) Item Power Supply Symbol Vdd Vn. VLED Idd Ivn ILED Vih Vil f 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 Min 4.5 -4.5 Vdd-1.0 0 Mean 5.0 -5 5.0 50 6.0 430 Vdd-.5 25 50 0.500* Tint Top 25 Max 5.5 -12 5.5 55 10.0 470 Vdd 0.8 5.5 5.0 50 Units V V V ma ma ma V V MHz % ns ms 0 C Note: Tint (Min) is the lowest line integration time available with 5.2 MHz clock. See note (1) under Optical-Characteristic, Table 2. Switching Characteristics (25°C) tw to CP tprh tdh SP tdl tds Vout tsh MODULE TIMING DIAGRAM The switching characteristics for the I/O clocks are in the above diagrams. See timing symbol definitions in the following Table 6. PAGE 5 OF 6 - PI325MC-A4, 11-15-00 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 Min. 0.180 45 25 15 tds tdh tdl tsh 20 20 50 90 Typical Max. 4.0 75 Units µs ns % ns ns ns ns ns Table 6. Symbol Definitions for the Above Timing Diagram PI325MC-A4 Module and Its Mechanical Dimensions This is an overview drawing of the module. A full size drawing is available upon request. SC 23 82 PI N 2 82 .5 10 LI N 19.5 SIDE TAPE 11.5 +/-0.2 D m 2m r 10 cto 1 X onne c 13.7 A RE TIO END VIEW 1X1-M2 TAPSIZE USE(DP6) NE EC .5 Æ1.65+/- HOLE 6.0 AN R DI Æ2.2+/-0.05 HOLE 6.8+/-0.2 15.5+/-0.2 THE SURFACE OF THE GLASS 2X2-M2.6 TAPSIZE USE (DP6) ALL DIMENSIONS IN MM UNLESS SPECIFIED OTHERWISE ©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. PAGE 6 OF 6 - PI325MC-A4, 11-15-00