AMIS-720658 Datasheet, PDF (3/15 Pages) AMI SEMICONDUCTOR – Contact Image Sensor

AMIS-720658: Contact Image Sensor
Data Sheet
register are then disabled. As a result, sensitivity in the 300dpi mode will be twice that of the 600dpi mode. The 300dpi readout time will
be approximately half of the 600dpi readout time. Unlike a CCD array, both the 300dpi and 600dpi arrays can operate with the same
clock frequency.
4.0 Functional Description
4.1 Input / Output Terminals
The AMIS-720658 image sensor has ten bond pads that become inter-connected when they are cascaded end-to-end on a PCB and
packaged in an image sensing module. Their symbols and functions are listed in Table 1.
Table 1: Input and Output Terminals
Signal
I/O Description
SI
I
Start pulse:
Input to start a line scan (see discussion of the sensors unique features for further details)
Global start pulse:
GBST
I Globally initializes the start inputs of all sensors and starts the scanning process of the first sensor (see
discussion of the sensors unique features for further details)
CLK
I
Clock:
Clock input for the shift register
Start input control:
SIC
I Input to control the start pulse to the first sensor (see discussion of the sensors unique features for further
details)
SR
I
Select resolution:
Selects the 600 or 300dpi mode (see discussion of the sensors unique features for further details)
VDD
I Power supply
VOUT
O
Video output voltage:
Output video signal from the chip
VSS
I Ground
VREF
I
Reference voltage:
Externally applied reference input voltage for the amplifier output; sets the output’s reset (dark) level
SO
O
End-of-scan pulse:
Output from the shift register at the end of a scan
AMI Semiconductor – Jul 06, M-20503-007
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