PI250MC-A6 Datasheet, PDF (5/7 Pages) AMI SEMICONDUCTOR – 200DPI CIS Sensor

Dark nonuniformity⁽⁶⁾
Dark output voltage
Modulation transfer
function⁽⁷⁾
Ud
Vd
MTF
<50
mV
200<Vd<300 mV
>50
%
See note 7
for MTF &
DOF.
Definition:
Table 4. Electro-optical characteristics at 25° C.
(1) Tint: Line scanning rate or integration time. Tint is determined by the interval of two
SP, start pulses. See note 2 for the high scanning speed operation.
(2) Fclk: main clock frequency. The call out is at 2.0 MHz, but electrically module reliably
operates to 5.0 MHz. However, it must be optically modified to obtain the minimum
integration time of 167 µsec. This modification is offered as a user's option.
(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
Vdmax: maximum output voltage of black document
(7) MTF = [(Vmax - Vmin) / (Vmax + Vmin)] x 100 [%]. Depth of focus, 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) lp / inch: line pair per inch
Table 5. Recommended Operating Conditions (25 °C)
Item
Symbol Min
Mean
Max
Power Supply
Vdd
4.5
5.0
5.5
VLED
4.5
5.0
5.5
Idd
22
25
30
ILED
200
380
450
Input voltage at digital high
Vih
Vdd-1.0 Vdd-.5 Vdd
Input voltage at digital low
Vil
0
0.6
Clock frequency
Fclk
2.0
5.0
Clock pulse high duty cycle⁽¹⁾
25
Clock pulse high duration⁽¹⁾
50
Integration time⁽²⁾
Tint
0.167
5.0
Operating temperature
Top
25
50
Table 5. Recommended Operating Conditions (25 °C)
(1) These duty cycle and high duration are for 5.0 MHz clock rate.
Units
V
V
ma
ma
V
V
MHz
%
ns
ms
0_C
PAGE 5 OF 7 - PI250MC-A6, 12-9-00