AMIS-720658: Contact Image Sensor
Data Sheet
1.0 General Description
AMI Semiconductor’s AMIS-720658 (PI6058) contact image sensor (CIS) is a selectable 600 or 300 dot per inch (dpi) resolution linear
image sensor, which employs AMI Semiconductor’s proprietary CMOS image sensing technology. The sensor contains an on-chip
output amplifier, power down circuitry and parallel transfer features that are uniquely combined with the present-day active-pixel-sensor
technology. The image sensors are designed to be cascaded end-to-end on a printed circuit board (PCB) and packaged in an image
sensing module. Applications for the sensor array include facsimiles, PC scanners, check readers, and office automation equipment.
Figure 1 is a block diagram of the sensor. Each sensor consists of 344 active pixels, their associated multiplexing switches, buffers and
an output amplifier circuit with a power down feature. The sensors pixel-pixel spacing is approximately 42.3µm. The size of each sensor
without the scribe lines is 14560µm by 335µm.
2.0 Key Features
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600 and 300dpi selectable resolutions
344 or 172 image sensor elements (pixels)
42.3µm (600dpi) pixel center-to-center spacing
On-chip amplifier
Single 3.3V power supply
3.3V input clocks and control signals
4.0MHz maximum pixel rate
Parallel / integrate and transfer
Power-down circuit
High sensitivity
Low power
Low noise
14560µm
22.95µm
42.3µm
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2
3
4
Row of 344 Pixels (600dpi)
and Video Line Multiplexer
342
343
344
Parallel Transfer, Storage Cells and Readout Registers
Scan Direction
Amplifier, Power-
Down and Offset
Control
SI
GBST
CLK
SIC
SR
VDD
VOUT
VSS
VREF
SO
335µm
Figure 1: Sensor Block Diagram
AMI Semiconductor
– Jul 06, M-20503-007
www.amis.com
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AMI [ AMI SEMICONDUCTOR ]
