AMIS-721250 Datasheet, PDF (1/12 Pages) AMI SEMICONDUCTOR – Contact Image Sensor

AMIS-721250: Contact Image Sensor
Data Sheet
1.0 General Description
AMI Semiconductor’s AMIS-721250 (PI6050D) contact image sensor (CIS) is a selectable 600 or 1200 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 includes facsimiles, PC scanners, check readers, and office automation
equipment.
Figure 1 is a block diagram of the sensor. Each sensor consists of 688 active pixels, their associated multiplexing switches, buffers, and
an output amplifier circuit with a power down feature. The sensors pixel-pixel spacing is approximately 21.15µm. The size of each
sensor without the scribe lines is 14560µm by 425µm.
2.0 Key Features
• 600 or 1200dpi selectable resolutions
• 344 or 688 image sensor elements (pixels)
• 21.15µm (1200dpi) pixel center-to-center spacing (47.24dots/mm)
• On-chip amplifier
• Single 5.0V power supply
• 3.3V input clocks
• 3.0MHz maximum pixel rate
• Parallel / integrate and transfer
• Power-down circuit
• High sensitivity
• Low power
• Low noise
21.15µm
1
2
1
2
14560µm
3
4
3
4
Row of 688 Pixels (1200dpi)
or Selectable
Row of 344 Pixels (600dpi)
and Video Line Multiplexer
342
343
344
686
687
688
Parallel Transfer, Storage Cells and Readout Registers
425µm
Amplifier, Power-
Down and Offset
Control
SI
GBST
CLK
SIC
SC
VDD VOUT
VSS
VREF
SO
AMI Semiconductor – Dec. 05, M-20496-004
www.amis.com
Figure 1: Sensor Block Diagram
1