PI240MC-A4 AMI | Alldatasheet

Document overview

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Technical content

  • Inverted Video Signals (magnitude increases in a negative d irection)
  • 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, whi ch is composed of 1728 PI3020 sensor chips. The PI3020 is a 200 DPI solid-state li ne imaging array, also a product of Peripheral Imaging Corporation. This imaging device is fabr icated 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 millimet er resolution. Applications include variety of document scanners, variety of mark reader s, and other automation equipment. Functional Description The PI240MC-A4 imaging array consists of 27 chips that are c ascaded 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-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 PI240MC-A4 module.

Figure 1. PI240MC-A4 Cross Section

Electro-Optical Characteristics (25 ° C) Parameter Symbol Parameter Units Note Number of photo detectors 1728 elements Pixel-to-pixel spacing 125 µm Line scanning rate (1) Tint 347 µsec @ 5.0 MHz clock frequency Clock frequency (2) freq 5.0 MHz Bright output voltage (3) Vp 1.0 Volts Bright output nonuniformity (4) Up <+/-30 % Adjacent pixel nonuniformity (5) Uadj <25 % Dark nonuniformity (6) Ud <100 mV Dark output voltage (6) Vd <150 mV Modulation transfer function (7) MTF >30 % Definition: (1) Tint: line scanning rate or integration time. Tint is d etermined 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 PAGE 3 OF 6 - PI240MC-A4, 4/5/01

Switching Characteristics (25 0 C) Figure 3 Symbol Definitions for the Above Timing Diagram Item Symbol Min. Typical Max. Units Clock cycle time to 0.2 4.0 ms Clock pulse width tw 50 ns Clock duty cycle 25 75 % Prohibit crossing time of Start Pulse tprh 15 ns Data setup time tds 20 ns Data hold time tdh 20 ns Signal delay time tdl 50 ns Signal settling time tsh 90 ns MODULE TIMING DIAGRAM CP SP tds Vout to tw tprh tdh tdl tsh PAGE 4 OF 6 - PI240MC-A4, 4/5/01

Absolute Maximum Rating: Parameter Symbols Maximum Rating Units Vdd 10 V Idd 30 mA Vn -15 V In 15 mA VLED 6 V Power supply voltage ILED 650 ma Input clock pulse (high level) Vih Vdd – 0.5V V Input clock pulse (low level) Vil -0.5 V Note (1): These parameters are absolute maximums and should not be used to operate the module. Operating Environment Operating temperature Top 0 to 50 0 C Operating humidity Hop 10 to 85 % Storage temperature Tstg -25 to+75 0 C Storage humidity Hstg 10 to 90 % Mechanical Considerations I/O Connector Pin configuration Connector is a 1.25mm 10 pin JAE IL-Z-10P-S125L3-E. Its loca tion, along with its pin 1 location, are shown in Figure 4 The Mechanical Structure. Pin Number Symbol Names and Functions

1 Vout Analog video output

2 Gnd Ground; 0V

3 Vdd (+5V) Positive power supply

4 Vn (-5V to – 12V) Negative power supply

5 Gnd Ground; 0V

6 SP Shift register start pulse

7 Gnd Ground; 0V

8 CP Sampling clock pulse

9 GLED Ground for the light source; 0V

10 VLED Supply for the light source

PAGE 5 OF 6 - PI240MC-A4, 4/5/01

The PI240MC-A4 module outline and its mechanical dimensions are shown. A detailed housing drawing is available upon request. PAGE 6 OF 6 - PI240MC-A4, 4/5/01 ©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. READ LINE 6.0 MECHANICAL STRUCTURE FIGURE 4 ALL DIMENSIONS IN MM UNLESS OTHERWISE SPECIFIED PIN 1 232 82.5 82.5 SCAN DIRECTION END VIEW CONNECTOR 1.25MM 10 PIN THE SURFACE OF THE GLASS SIDE TAPE ø2.2±0.05 HOLE 2X2 - M2.6 TAPSIZE USE (DP6) 15.5±0.05 1.25 14.6 19±0.3 18±0.3 5.8±0.3