AMIS-710409-A4: 400dpi CIS Module

Data Sheet

7.0 Electro-Optical Characteristics (25

Table 4: Electro-Optical Characteristics at 25

Parameter

Symbol

Parameter

Units

Note

Total number of photo detectors

3456

Elements

Section 1, 2 & 3 number of photo detectors

896

Elements

Section 4 number of detectors

768

Elements

Pixel-to-pixel spacing

63.5

µm

Line scanning rate

Tint

(1)

180

µsec

@ 5.0MHz clock frequency

Clock frequency

(2)

f

5.0

MHz

Bright output voltage

(3)

Video output

500

mVolt

Bright output non-uniformity

(4)

Up

+/-30

%

Dark non-uniformity

(5)

Ud

<140

mV

Dark output voltage

(6)

Dark level (DL)

<600

mV

Modulation transfer function

(7)

MTF

>50

%

Notes:

(1)

Tint: line scanning rate or integration time. Tint is determined by the interval between two start pulses (SP).

(2)

f: main clock frequency also equals the video sampling frequency.

(3)

Video output level is controlled with an adjustment as well as the integration time

(4)

Up = {[Vp(max) –Vp(min)]/Vp(max)}x100%

Where Vp(max) = maximum peak pixel and Vp(min) = minimum pixel.

(5)

Ud = Vdmax – Vdmin

Vdmin is the minimum output voltage with LED off.

Vdmax is maximum output voltage with LED on.

(6)

This level is measured from the reset level, which is located between the pixels, during the pixel reset duration. The reset level is at or near ground, 0V. Note that

the gain is adjustable on each output. However, it is recommended that the gain should not be increased above the level where the reset ground level starts to

increase above zero.

(7)

A graph of a typical MTF is shown in Figure 3.

8.0 MTF Graph and its Discussion

Figure 3: MTF versus Distance

TYPICAL MTF VS DEPTH OF FOCUS

0

10

20

30

40

50

60

70

0

0.1

0.2

0.3

0.4

0.5

0.6

DEPTH FROM THE WINDOW SURFACE(mm)

4

AMI Semiconductor – July 06, M-20594-001

www.amis.com