AMIS-710651-A4: Color CIS Module
7.0 Electro-Optical Characteristics (25
°
C)
All tests were conducted at the typical pixel rate of 3.0MHz
Table 4: Electro-Optical Characteristics (25°C)
Parameter
Number of active photo detectors
Pixel-to-pixel spacing
Line scan rate
Clock frequency
Pixel rate
Bright output voltage
Bright output non-uniformity
Bright output total non-uniformity
Adjacent pixel non-uniformity
Dark non-uniformity
Dark output voltage range
Random noise
Modulation transfer function
Notes:
(1)
(2)
(3)
Data Sheet
Symbol
TINT
(2)
FREQ
(2)
PRATE
(3)
Vpavg
(4)
+/- Up
(5)
Uptotal
(6)
Uadj
(7)
Ud
(8)
VDL
(9)
RNL
MTF
(10)
(1)
Typ.
5160
2580
42.3
84.6
~1.75
3.0
3.0
0.2
< /-30
<60
<25
<150
1.2<VDL<1.5
<24
<4
40
Units
Elements
µm
ms/line
MHz
MHz
V
%
%
%
mV
V
p-p mV
rms mV
%
Note
600dpi
300dpi
600dpi
300dpi
@ 3.0MHz clock frequency
Scan rate (integration time), TINT, is determined by the time interval between two SPs. See Table 3, Note 5.
Clock frequency, FREQ, is the input clock frequency and its corresponding PRATE is the pixel sample rate.
Bright output voltage Vpmax = maximum pixel value of Vp(n), Vpmin = minimum pixel value of Vp(n), Vpavg =
∑
Vp(n)/5160; where Vp(n) is the n
th
pixel in a line
scan with the module scanning a uniform white target and Vp values are measured with a uniform exposure.
(4) Bright output non-uniformity Up(+) = [(Vpmax - Vpavg) / Vpavg] x 100%, Up(-)= [(Vpavg - Vpmin) / Vpavg] x 100%, whichever polarity with the highest absolute
value is selected.
(5) Bright output total non-uniformity: Uptotal = [Vpmax -Vpmin]/Vpavg x 100%
(6) Adjacent pixel non-uniformity: Upadj = MAX[ | (Vp(n) - Vp(n+l) | / Vp(n))] x 100%
Upadj is the non-uniformity in percentage. It is the maximum difference amplitude between two neighboring pixels.
(7) Dark non-uniformity: Ud = Vdmax – Vdmin
Vdmax is the max. pixel value of the video pixel in the dark. Vdmin is the min. pixel value of the video pixel in the dark. The references for these levels are the dark
level (VDL).
(8) Dark output voltage range (VDL) is the level between the output dark level and ground.
(9) Random noise (RNL): The rms value was calculated from measured p-p thermal noise taken at output from a selected pixel. The rms is defined as one standard
deviation of at least 64 pixels sampled. The calculation of the standard deviation is based on an idealized Gaussian probability curve.
(10) Modulation transfer function is defined as MTF = [(Vmax - Vmin) / (Vmax + Vmin)] x 100%. MTF is a measure at the glass surface. Vmax is the maximum output
voltage at 300lp/inch (at 1/2 of the optical Nyquest frequency) and Vmin is the minimum output voltage at 300lp/inch.
8.0 Electrical Clocking Characteristics
Table 5: Clock Amplitude Duty Characteristics (25 C)
Parameter
Symbol
(1)
Clock input voltage
VIH
(1)
VIL
(2)
Clock frequency
FREQ
(2)
Pixel rate
PRATE
(4)
Line read time
TINT
(5)
Clock pulse duty cycle
Ratio = twp / tp
Notes:
(1)
(2)
(3)
(4)
°
Min.
Typ.
See Table 3
3.0
3.0
Max.
Units
Note 3
~1.30
45
4.0
4.0
~10
MHz
MHz
ms
%
(5)
The clocks, CP and SP are compatible with CMOS clock drivers.
FREQ is the clock frequency and PRATE is the pixel sample rate.
Minimum values are not specified because it will be determined by the maximum TINT value. See Note 4.
TINT is the line scan read time, which depends on the interval between the SP entries. The minimum time is determined by (1/clock frequency) x (5160 +
150) pixels. Note that there are a few extra pixels used to determine the typical line time of 820µsec @ 3.0MHz PRATE (see Figure 1). There are 55 clocks
required to transfer and reset the photo-sites before the video can be scanned out. The longest integration time is determined by the degree of leakage
current degradation that can be tolerated by the system. A 10ms maximum is a typical rule-of-thumb. An experienced CIS user can use his discretion and
determine the desired tolerance level for the given system.
The definition for the symbols used in the ratio is defined in
. A duty cycle of exactly 50 percent is recommended to maintain equal pixel duration
between odd and even pixels.
AMI Semiconductor
– Aug. 06, M-20609-001
www.amis.com
3
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