PI331MC-DR Datasheet, PDF (5/9 Pages) AMI SEMICONDUCTOR – 300DPI CIS Two Level Digital Output Module

• VDD is on Pin 2. This is a + 5 Volts supply.
• VN is on Pin 3. This is a (– 10 to –5) Volts supply.
• VLED is on Pin 8. This is a +5 Volts supply for the LED light source.
Note: Power return for the LED light source is GLED on Pin 7 and the ground return for
the CIS modules is pin 5.
Video Output:
DIGOUT is on pin 1 of the I/O connector. This is the digital video output from the CIS
module. Reflection off the dark target produces a digital signal of “0” level, while the white
reflection off the white target produces a digital level of “one”. The amplitudes of the white
and dark are listed in the table below:
Electro-Optical Characteristics (25° C)
Table 2. Electro-optical characteristics at 25° C.
Parameter
Number of photo detectors
Pixel to pixel spacing
Line scanning rate
Symbol
Tint⁽¹⁾
Parameter
1056
84.7
600
Units
elements
µm
µsec
Clock frequency
Bright output
Dark output
f
2.0
Digital Video
>3.2
Output Signal
<0.8
MHz
Volts
Volts
Note
@ 2.0 MHz
clock
frequency
(1) The Tint is specified with a 2.0 MHz clock frequency. In operation the time
constants in the reference generator is set to match the initial exposure time,
hence the time constant will determine the optimum integration time. Note the
integration time is also a function of the clock frequency. Accordingly it is highly
recommended that the parameters be factory adjust for the specific
applications.
Table 3. Recommended Operating Conditions (25 °C)
Item
Power Supply
Input voltage at digital high
Input voltage at digital low
Clock frequency⁽¹⁾
Clock pulse high duty cycle
Clock pulse high duration⁽²⁾
Symbol Min
Mean
Max
Vdd
4.5
5.0
5.5
Vn.
-10
-5
VLED
3.5
5.0
5.5
Idd
21
22
25
Ivn
9
10
12
ILED
25
160
200
Vih
Vdd-1.0 Vdd-.5 Vdd
Vil
0
0.8
f
1.75
2.25
25
Clock
100
Units
V
V
V
mA
mA
mA
V
V
MHz
%
ns
PAGE 5 OF 9 - PI331MC-DR, 11-8-00