AMIS-720639 Datasheet, PDF (3/10 Pages) AMI SEMICONDUCTOR – 600dpi CIS Sensor Chip

AMIS-720639: 600dpi CIS Sensor Chip
Data Sheet
2.0 Electro-Optical Characteristics (25^°C)
Table 2 lists the electro-optical characteristics of the AMIS-720639 sensor chip at 25^°C.
Table 2: Electro-Optical Characteristics
Parameters
Number of photo-elements
Pixel-to-pixel spacing
Chip scanning rate
Clock frequency
Symbols
Tint ⁽¹⁾
fclk ⁽²⁾
Typical
192
42
38.4
5.0
Units
Elements
µm
µsec
MHz
Notes
@ typical 5MHz pixel rate
See Note 2
See Note 2
IOUT (saturation charge output for a given
sample time)
Qsat ⁽³⁾
170 to 200
pC
With 570nm light source. At saturation
exposure of 5.7Joules/cm²
At 5.0MHz clock frequency
Video voltage output from an A4 size CIS
Vpavg ⁽⁴⁾
1.0
V
Using a red LED source
module, AMIS-710620-A4 (PI620MC-A4)
0.300
V
Using a Yellow-Green LED source,
(four tapped outputs, for high speed
at minimum integration time ≅ 277µsec
application)
Output voltage non-uniformity
Up ⁽⁵⁾
± 7.5
@ 5MHz clock rate
%
Test circuit used only the amplifier of
Note 4
Chip-to-chip non-uniformity
Ucc
± 7.5
%
Test circuit used only the amplifier in
Dark output voltage
Dark output non-uniformity
Vd ⁽⁶⁾
<50
mV
Ud ⁽⁶⁾
<20
mV
Note 4
Test circuit see Note 4
Test circuit see Note 4
Notes:
(1) 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.
(2) fclk stands for the input clock frequency; maximum operating frequency is 6.5MHz.
(3) 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).
(4) 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.
(5) 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.
(6) 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.
(7) 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
3
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