1. DESCRIPTION
This data sheet covers the PI616MC-AS specification and brief description of the PI616MC-AS
CIS Module.
CIS stands for Contact Image Sensor. It is a one-dimension array of photosensitive elements,
designed to image documents with a one-to-one magnification ratio. The sensors are
sequentially cascaded to form a one dimensional variable-length line array in multiple integral
numbers. Hence, providing the users desired lengths.
The PI616MC-AS is one of these special length line-image arrays. It is configured with a total of
8 sub sections, each section containing a sequential line of 5 array sensors with its individual
video output line. These 8 video outputs, are also referred to as tapped outputs. They are all
readout in parallel. See Figure 1, Simplified Circuit Block Diagram. The 8 sub sections are all
sequentially cascaded to form the one-dimensional array. It is fabricated on two PCB (Printed
Circuit Board) referred to as sensor boards. Each sensor board contains 4 sub sections. The
two sensor boards are cascaded in series to form a complete line image sensor of 8 sub sections
with a total read length of
@
325mm. Accordingly, each sensor board contains 20 each of PI3039
image sensors, also a product of PIC. Hence, for both boards there are a total of 8 parallel
tapped outputs and 40 each of the PI3039 image array sensors. Each chip has 192 photo
sensing cells, hence, on one board there are 3840 cell sites and a total of 7680 cell sites for both
board. Each cell site is a photo-detector that possesses its own independent processing circuit.
An associated on-chip digital shift register scans and reads each photo detector’s video signal on
to a common output video line. In section of 5 sensors these common output video lines are
individually brought out to the sensor boards’ I/O connectors. There are two connectors, one on
each board, each with four video outputs. These connectors are connected via a cable to their
respective amplifier boards. See Figure 2, System Configuration Block Diagram. PI616MC-AS’s
schematic and its PCB mechanical outline drawing are attached to this data sheet.
2. OVERVIEW
The PI616MC-AS has
»
324.2 mm read width. Its recommended line rate is 192ms/line @
5.0MHz clock rate, but its minimum can be low as 160ms/line @ it’s maximum clocking speed of
6.0 MHz. Its sensor photo-site density is 23.25 elements/mm. See Peripheral Imaging
Corporation’s PI3039 data sheet that covers the specifications on the imaging array sensor.
Operationally, it requires only the power supplies, +5V and –5V and two input clocks, one is the
clock, CP, to operate the internal shift registers, second is the start pulse, SP, to initiate the
output scan.
3. SCAN OUTLINE
TABLE 3.1 SCANNING OUTLINE
ITEM
READABLE WIDTH
SENSOR PHOTO-SITE DENSITY
NUMBER OF TOTAL ACTIVE
SENSOR PHOTO-SITES
SPECIFICATION
324.2 mm
23.25 elements/mm
7680 elements
NOTE
PAGE 2 OF 22 - PI616MC-AS, 12/20/02
AMI [ AMI SEMICONDUCTOR ]
