PI224MC-A6 Datasheet, PDF (4/6 Pages) AMI SEMICONDUCTOR – 200DPI CIS Sensor

Electro-Optical Characteristics (25° C)
Table 4. Electro-optical characteristics at 25° C.
Parameter
Number of photo detectors
Pixel to pixel spacing
Line scanning rate
Symbol
Tint⁽¹⁾
Parameter
832
125
180
Units
elements
µm
µsec
Clock frequency⁽²⁾
Bright output voltage⁽³⁾
Bright output
nonuniformity⁽⁴⁾
Adjacent pixel
nonuniformity⁽⁵⁾
Dark nonuniformity⁽⁶⁾
Dark output voltage
Modulation transfer
function⁽⁷⁾
f
Video Output
Up
Uadj
Ud
Vd
MTF
5
1.0
<+/-30
<25
<20
<200
>50
MHz
V
%
%
mV
mV
%
Note
Tested @
5 MHz
clock
frequency
Test at
Tint=180us
See note 7
for MTF &
DOF.
Definition:
(1) Tint: Line scanning rate or integration time. Tint is determined by the interval of two
SP, start pulses. The module was test at 180ms, but it will operate to 167ms with
clocking speed of 5.0MHz.
(2) f: main clock frequency. The module was tested at 5.0 MHz, but electrically it reliably
operates above 5.0 MHz, but with a minimum integration time of 167 µsec.
(3) Vpavg = ∑ Vp(n)/832
(4) Up = [(Vpmax - Vp) / Vp] x 100% or [(Vp - Vpmin) / Vp] x 100%
(5) Upadj = MAX[ | (Vp(n) - Vp(n+l) | / Vp(n)] x 100%
Upadj is the nonuniformity percentage pixel to pixel
(6) Ud = Vdmax - Vdmin
Vdmin is the minimum output on a black document(O.D.=0.8)
Vdmax: maximum output voltage of black document (O.D.= 0.8)
(7) MTF = [(Vmax - Vmin) / (Vmax + Vmin)] x 100 [%]. DOF range is defined with the MTF.
MTF is measure at glass surface and at 0.4mm from the glass > 50% and peaks at
approximately mid-point of 0.2mm.
Vmax: maximum output voltage at 50 lp/inch (At 1/2 of the optical Nyquest Frequency)
Vmin: minimum output voltage at 50 lp/inch
(8) O.D. = Optical Density
(9) lp / inch: line pair per inch
PAGE 4 OF 6 - PI224MC-A6, 8/25/00