• 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

Symbol

Parameter

Units

Note

Number of photo detectors

1056

elements

Pixel to pixel spacing

84.7

µm

Line scanning rate

600

µsec

@ 2.0 MHz

clock

frequency

Clock frequency

f

2.0

MHz

Bright output

Dark output

Digital Video

Output Signal

>3.2

<0.8

Volts

Volts

(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

Symbol

Min

Mean

Max

Units

Vdd

4.5

5.0

5.5

V

Vn.

-10

-5

V

VLED

3.5

5.0

5.5

V

Idd

21

22

25

mA

Ivn

9

10

12

mA

Power Supply

ILED

25

160

200

mA

Input voltage at digital high

Vih

Vdd-1.0

Vdd-.5

Vdd

V

Input voltage at digital low

Vil

0

0.8

V

f

1.75

2.25

MHz

Clock pulse high duty cycle

25

%

Clock

100

ns

PAGE 5 OF 9 - PI331MC-DR, 11-8-00