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AMI SEMICONDUCTOR

PI330MC-DR Datasheet Preview

PI330MC-DR Datasheet

300DPI CIS Two Level Digital Output Module

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Peripheral
Imaging
Corporation
PI330MC-DR
300DPI CIS Two Level Digital Output Module
Engineering Data Sheet
Key Features
• Light source, lens, and sensor are integrated into a single module
• 11.8 dpm resolution, 89 mm scanning length
• Up to 423 µsec/line scanning speed, with 2.5 MHz pixel rate (See Table 3, Note 3.)
• Wide dynamic range
• Two-Level Tracking Digital Output (“Dynamic Threshold Digitizer”)
• Infrared light source 880nm (Other colors are available)
• Compact size 15 mm x 25.6 mm x 102 mm
• Low power
• Light weight
General Description
The PI330MC-DR is a contact image sensor, CIS, module with an additional on board
circuit that digitizes the analog pixels from the CIS image sensor to a “background-
tracking”, two-level digital output signals. It is based on CIS module, the PI305M-A6
manufactured by PIC, but with a shorter read length of 89 mm. Hence, its performance is
equivalent to the PI305M-A6 that uses MOS image sensor technology to gains its high-
speed performance and high sensitivity. The PI330MC-DR is suitable for scanning
documents with width of 89 mm and with resolution of 11.8 dots per millimeter. Its has a
www.DatabShreoeat4dU.acopmplications, but specially designed for the following areas:
Where data compression is required, such as in data transmissions.
Where component pin-out count must be kept to a minimum.
PAGE 1 OF 9 - PI330MC-DR, 4/13/00




AMI SEMICONDUCTOR

PI330MC-DR Datasheet Preview

PI330MC-DR Datasheet

300DPI CIS Two Level Digital Output Module

No Preview Available !

The background-tracking-digitizing circuits in the PI330MC-DR have been referred to as
the “dynamic threshold” two-level A/D converter. For the purpose of describing the
module’s characteristics this “dynamic threshold” processing circuit shall herein be
referred to as the “tracking digitizer”.
Module Description
GLED
VLED
LED LED LED LED LED LED LED LED
12
ROD LENS
PHOTO SENSORS
1054
1056
1055
3 4 5 ----------------
VIDEO
LINE
BUFFER
SHIFT REGISTER
VIDEO
AMP
TRACKING DIGITIZER
VN(-V)
VDD (+5)
GRD
DIGOUT
CP SP GRD
Figure 1. PI330MC-DR Module Block Diagram.
The PI330MC-DR module consists of 11 sensors that are cascaded to provide 1056
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. A
buffer amplifier amplifies the video pixels from the image sensors and passes them to
analog digitizing circuit, where video pixels are converted to digital signal and passed to
output of the module. See Figure 1, the block diagram of the PI330MC-DR module.
Illumination is by means of an integrated LED light source. All components are housed in
a small plastic housing with a cover glass which acts as the focal point for the object being
scanned and protects the imaging array, the micro lens assembly, and the LED light
source from dust. The pictorial of PI330MC-DR cross section is shown in Figure 2.
www.DataSheet4U.com
PAGE 2 OF 9 - PI330MC-DR, 4/13/00


Part Number PI330MC-DR
Description 300DPI CIS Two Level Digital Output Module
Maker AMI SEMICONDUCTOR
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