AMIS-710208 Datasheet, PDF (3/8 Pages) AMI SEMICONDUCTOR – 200dpi CIS Module

AMIS-710208-A7: 200dpi CIS Module
Data Sheet
4.0 Input/Output Terminals
Figure 3 shows location of the 8-pin connector, the control for adjusting the video gain and the contacts for the LED power supply. Note
that the glass window is facing down.
Figure 3: Module Rear View
“GAIN ADJUST” is used to change the analog gain. This is used to set the average video output (Vpavg) to a particular level when
different exposure levels are employed. Vpavg is factory set with a particular exposure level. Note that the exposure is the product of
light power and time of exposure (integration time). Since the module’s light power is a constant, then the total light exposure then
depends on its integration time, which is the time between two Start Pulses (SP).
The integration time is set at the factory usually according to the customer requirements; Vpavg is then adjusted to a particular level.
From this level, if the integration time is decreased or increased, the specified Vpavg will increase or decrease proportionally.
If it is necessary to restore the amplitude, within a limited range, it can be adjusted with the gain control.
Vpavg is measured with the module’s glass window facing down on a standard white uniform target similar to the standard white copy
or typing paper.
The module connector is an 8-pin 1mm surface mount flex cable, part number Molex 52207-0890. Table 1 lists the connector pin-out
and their descriptions.
Table 1: Pin Configuration
Pin Number
Symbol
1
VOUT
2
Vdd
3
Vn
4
SP
5
GRD
6
CLOCK
7
GLED
8
VLED
Input/Output
O
I
I
I
I
I
I
I
Description
Analog video output
+5V power supply
-5V power supply
SP for the shift register
Ground return for the module
Main clock input to the module shift register
Ground return for the LED light source
+5V power supply for the LED light source
AMI Semiconductor – Jan. 06, M-20507-001
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