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

SPECIFICATION

NOTE

READABLE WIDTH

324.2 mm

SENSOR PHOTO-SITE DENSITY

23.25 elements/mm

NUMBER OF TOTAL ACTIVE

SENSOR PHOTO-SITES

7680 elements

PAGE 2 OF 22 - PI616MC-AS, 12/20/02