AMIS-720639:
600dpi CIS Sensor Chip
Data Sheet
2.0 Electro-Optical Characteristics (25
°
C)
°
C.
Table 2: Electro-Optical Characteristics
Parameters
Number of photo-elements
Pixel-to-pixel spacing
Chip scanning rate
Clock frequency
IOUT (saturation charge output for a given
sample time)
At 5.0MHz clock frequency
Video voltage output from an A4 size CIS
module, AMIS-710620-A4 (PI620MC-A4)
(four tapped outputs, for high speed
application)
Output voltage non-uniformity
Chip-to-chip non-uniformity
Dark output voltage
Dark output non-uniformity
Notes:
(1)
(2)
(3)
(4)
Symbols
(1)
Tint
fclk
Qsat
Typical
192
42
38.4
5.0
170 to 200
1.0
0.300
±
7.5
±
7.5
<50
<20
Units
Elements
µm
µsec
MHz
pC
V
V
%
%
mV
mV
Notes
(2)
@ typical 5MHz pixel rate
See Note 2
See Note 2
With 570nm light source. At saturation
2
exposure of 5.7Joules/cm
Using a red LED source
Using a Yellow-Green LED source,
at minimum integration time
≅
277µsec
@ 5MHz clock rate
Test circuit used only the amplifier of
Note 4
Test circuit used only the amplifier in
Note 4
Test circuit see Note 4
Test circuit see Note 4
(3)
Vpavg
(4)
Up
(5)
Ucc
Vd
(6)
Ud
(6)
(5)
(6)
(7)
Tint stands for the line scanning rate or the integration time. It is determined by the time interval between two SPs at the maximum clock rate of 6.5MHz,
Tint = 29.5µsec.
fclk stands for the input clock frequency; maximum operating frequency is 6.5MHz.
There are three types of signal outputs that are called out in the table (see Section 7.0). The referenced section discusses each of the video output circuits. Two
are defined for pulsed current, or charge processing, (see Figure 5 or Figure 7). The third is voltage output circuit, specified for most CIS applications because of
its lower cost and simpler implementation advantages (see Figure 6).
Specified for CIS application is a circuit with a buffer amplifier that interfaces the video output (see Figure 6).This typical video output line is terminated with a
commonly used standard op-amp circuit. It is located in Section 7.0. The AMIS-710227 (PI227MC-A4) CIS module, employing this type of output circuit, was used
in the measurements.
Note: A LED light source is an integral part of the module.
Up is the uniformity specification. It is measure with the image sensor exposed under a uniform light source.
Up = [(Vpmax-Vpavg)/Vpavg]x100%
Or [(Vpavg-Vpmin)/Vpavg]x100%, which ever is greater.
Where Vpavg =
∑Vpn/Npixels
a.
Vpn is the n
th
pixels of sensor chip.
b.
Npixels is the total number of pixels in sensor chip.
c.
Vpmax is the maximum pixel output voltage in the light.
d.
Vpmin is the minimum pixel output voltage in the light.
Note: In the light means the sensor is exposed to the light.
Video output in dark: Vd =
∑Vdn/Npixels
Note: In the dark means that sensor are placed on dark target and measured with the light off.
Uniformity in the dark: Ud = (Vdmax-Vdmin)
a.
Vdmax is the maximum pixel output voltage in the dark.
b.
Vdmin is the minimum pixel output voltage in the dark.
AMI Semiconductor
– May 06, M-20569-001
www.amis.com
3
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