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Contact image sensor heads
IA1208-FB11A
Color image sensor heads for multi-function
IA1208-FB11A
Flatbed type Color Image Sensor Head, utilizing RGB light source uniquely developed by ROHM.
It utilizes sensor IC with resolution change function, enabling the selection of optical resolution according to the scanning
media.
zApplications
Image sensor heads are designed for multi-function equipment such as facsimiles with color scanner or multiple function
printers.
zFeatures
1) Signal amplifier is built into the image sensor IC in order to increase immunity to external noise.
2) Employing low voltage driving sensor enables 3.3V drive which is identical to the ASIC.
3) The LED light source is mounted on the same substrate as the sensor chip which allows packaging of the device with
lighter weight and smaller size.
4) With the proprietary prism, the output signal is maintained uniformly.
5) The ceramic substrate is used for excellent dimensional accuracy and thermal stability.
zExternal dimensions (Unit : mm)
2-φ1.5×2
Oval Hole D4MIN 2±0.2
Scanning Line
1.5
2-φ1.5 D4MIN
3
16 2-R0.5
4+50-0.2
236±0.5
(232)
216
Effective 1st bit
5
2+−00..13
12.4±0.5
9.4
0.724±0.1
219.2±0.3
Pin No.
No.1
No.2
No.3
No.4
No.5
No.6
219.2±0.3
Signal
Ao
MODE
GND
VDD
VREF
SP
Pin No.
No.7
No.8
No.9
No.10
No.11
No.12
Signal
CLK
V-LED
B-GND
G-GND
R-GND
NC
4+50-0.2
15 3.8
4.72
6.496
7.22
2-C0.3
2-C0.3
(9.8)
13.8
MAX.3.15
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Contact image sensor heads
zCharacteristics
Parameter
Effective scanning width
Primary scan dot density
Total dot number
Power supply voltage
Reference voltage
Scanning speed
Clock frequency
Maximum dynamic range
Minimum dynamic range
Dark output
Operating temperature
Symbol
VDD
VREF
SLT
CLK
VRMax
VRMin.
Vod
Typ.
216
1200
10368
3.3
0.8
9.0
5
0.75
0.375
VREF +− 0.1
5 to 45
Unit
mm
dpi
dots
V
V
ms / line
MHz
V
V
V
°C
zPin assignments
No. Circuit
I/O
Function
1 NC
2 R-GND
I RED LED ground
3 G-GND
I GREEN LED ground
4 B-GND
I BLUE LED ground
5 V-LED
I LED power supply
6 SP
7 VDD
I Start pulse
I Power supply
8 CLK
I Clock
9 GND
I Ground
10 VREF
I Reference voltage
11 MODE
12 AO
I Mode select
O Analog output
IA1208-FB11A
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Contact image sensor heads
zTiming chart
(a) CLK Timing Chart
CLK
50%
50%
SP
tSETUP tHOLD
IA1208-FB11A
1/fCLK
twH twL
ts
Ao
1pixel
2pixel
(b-1) Data Output Timing Chart (1200dpi mode)
After turning on the SP pulse, the analog output starts from the setting up point of 82 clock pulse.
CLK
SP
Ao
12
82 83 84
109 110 111
VREF Output Period(82pixels) Vdummy
Analog Output Period
1 to 82pixels
83 to 190pixels 191 to 10450pixels
Note) The CLK section area which is over the effective pixcel numbers
(Output blank part) cannot be used as the analog Output standard level.
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