參數(shù)資料
型號: AMIS-720649
英文描述: Contact Image Sensor
中文描述: 接觸式圖像傳感器
文件頁數(shù): 7/10頁
文件大?。?/td> 279K
代理商: AMIS-720649
AMIS-720649: Contact Image Sensor
Data Sheet
8.0 Absolute Maximum Ratings
Table 4 lists the absolute maximum ratings.
Table 4: Absolute Maximum Ratings
Parameter
Power supply voltage (Vdd)
Clock input voltage high leve l
(1)
Clock input voltage low level
(1)
Operating temperature
Operating humidity
Storage temperature
Storage humidity
Notes:
1.
Applies to all clocks; GBST, SIC, SI, and CLK.
Max.
10
Vdd + 0.5
-0.5
-10 to +50
+10 to +85
-25 to +75
+10 to +90
Units
V
V
V
°C
RH%
°C
RH%
9.0 Timing Requirements
The timing requirements and their symbols are listed in Table 5 and its accompanying timing diagrams are shown in Figure 4 and
Figure 5.
Table 5: Timing Requirements
Parameter
Symbol
Min.
Clock (CLK) period
CLKp
400
Clock (CLK) pulse width
CLKpw
Clock (CLK) duty cycle
Data setup time
Tset
20
Data hold time
(1)
Thold
25
Clock (CLK) rise time
(2)
CLKrt
70
Clock (CLK) fall time
(2)
CLKft
70
End of scan rise time
(2)
SOrt
End of scan fall time
(2)
SOft
Global start rise time
(3)
GBSTrt
70
Global start fall time
(3)
GBSTft
70
Pixel rise time
Prt
Pixel fall time
(4,5)
Pft
Notes:
1.
The shift register will load on all falling CLK edges, so setup and hold times (Tset, Thold) are needed to prevent the loading of multiple start pulses. This would
occur if the GBST remains high during two fallings edges of the CLK signal.
2.
SI starts the register scanning and the first active pixel is read out on the 30
th
clock cycle of the CLK signal. However, when multiple sensors are sequentially
scanned, as in CIS modules, the SO from the predecessor sensor becomes the SI to the subsequent sensor, hence the SI clock = the SO clock.
3.
As discussed under the third unique feature, the GBST starts the initialization process and preprocesses all sensors simultaneously in the first 29 clock cycles (29
pixels) before the first pixel is scanned onto the video line from the first sensor.
4.
The transition between pixels does not always reach the dark offset level as shown in Figure 4
(Vout). Figure 4 shows the transition doing so for illustration
purposes; however a stable pixel sampling point does exist for every pixel.
5.
The pixel rise time is defined as the time from when the CLK’s rising edge has reached 50 percent of its maximum amplitude to the point when a pixel has reached
90 percent of its maximum amplitude. The pixel fall time is defined as the time from when a pixel’s charge begins to decrease from its maximum amplitude to
within 10 percent of the lowest point before the next pixel begins to rise.
Typ.
500
375
75
115
75
Max.
2000
50
50
Units
ns
ns
%
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
7
AMI Semiconductor
– Dec. 05, M-20488-001
www.amis.com
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