AMIS-720442 Datasheet, PDF (12/16 Pages) AMI SEMICONDUCTOR – 400dpi Contact Image Sensor

AMIS-720442-A: 400dpi Contact Image Sensor
Data Sheet
11.0 Sensor’s Operational Specifications
11.1 Absolute Maximum Ratings
Table 7: Absolute Maximum Ratings
Parameters
Power supply voltage
Power supply current
Input clock pulse (high level)
Input clock pulse (low level)
Operating temperature
Operating humidity
Storage temperature
Storage humidity
Symbol
VDD
IDD
Vih
Vil
Top
Hop
Tstg
Hstg
Maximum Rating
10
<2.0
Vdd + 0.5
-0.25
0 to 50
10 to 85
-25 to 75
10 to 90
Units
V
ma
V
V
°_C
RH %
°_C
RH %
11.2 Recommended Operating Conditions at Room Temperature
Table 8: Recommended Operating Conditions at Room Temperature
Parameters
Symbol
Min.
Typ.
Max.
Units
Power supply
Input clock pulse high level
Input clock pulse low level
Operating high level exposed output
Clock frequency
Clock pulse duty cycle
VDD
Vih ⁽¹⁾
Vil ⁽¹⁾
IOUT ⁽²⁾
Fclk ⁽³⁾
Duty ⁽⁴⁾
4.5
5.0
3.0
5.0
0
0
See Note 2
0.1
2.0
25
5.5
VDD
0.8
5.0
V
V
V
MHz
%
Clock pulse high durations
tw
0.125
µsec
Integration time
Operating temperature
Tint
0.864
10
ms
Top
25
50
°_C
Notes:
(1) Applies to both CP and SP
(2) The output is a current that is proportional to the charges, which are integrated on the phototransistor’s base via photon-to-electron conversion. For its conversion
to voltage pixels see Figure 4, in Section 4.0.
(3) Although the clock frequency, Fclk, will operate the device at less than 100kHz, it is recommended that the device be operated above 500kHz to avoid
complication of leakage current build-up. In applications using long CIS module length, such as an array of image sensor > 27, increases the readout time, i.e.,
increases tint, hence, leakage current build-up occurs.
(4) The clock duty cycle typically is set to 25 percent. However, it can operate with duty cycle as large as 50 percent, which will allow more reset time at the expense
of video pixel readout time. At clock frequencies approaching 5.0MHz it is recommended to use 50 percent duty cycle to allow more time for the signal pixel to
integrate and settle.
AMI Semiconductor – May 06, M-20571-001
12
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