Rohm IA2008-MB20A Monochrome image sensor head Datasheet

IA2008-MB20A
Contact image sensor heads
Monochrome image sensor head
(8pixel / mm)
IA2008-MB20A
The IA2008-MB20A is a state-of-the-art compact, lightweight A4-size monochrome image sensor head that resulted from
the combination of ROHM’s LSI circuit technology and thermal printhead mounting technology.
zApplications
Facsimiles
Image scanning devices
zFeatures
1) The amplifiers, resistors, capacitors, and other discrete components that were normally externally attached, are built
into the sensor IC.
2) Compact body and lightweight achieved by the placement of the LED light source and sensor IC on the same board.
3) Uses a special ROHM developed prism that provides superior light gathering characteristics and uniform light
dispersion.
4) Uses a ceramic board as the base board for minimal temperature fluctuations and uniform thermal dispersion.
5) This is excellent in the point of γ (gamma) characteristics, and it realizes clear gradation. (Exceptionally clear print
quality is given by all bits conpensation in the both case of dark output and white output.)
zExternal dimensions (Units : mm)
4-φ1.9
Effective
Depth7
(0.16)
13±0.3
17.5±0.3
10.5±0.5
3.75±0.5
Paper Feed
Direction
(6)
2.25±0.2
No.1 Pixel
232±0.5
216 (Effective Reading Width : 212)
(13.8)
(25)
Notes :
1. Curvature of glass surface : With the A-direction positive, 0 to 0.22 with
respect to the cover glass.
2. The frame material is UL94V-0.
(Connecter part number)
Socket Housing : IL-Z-7S-S125C3 (JAE)
Socket Contact : IL-Z-C3-A-15000 (JAE)
(49.5)
(1.41)
No.7 (10.4) No.1
Max.2 11.18±0.3
5.5±0.5
(133)
A
PIN No.
No.1
No.2
No.3
No.4
No.5
No.6
No.7
SIGNAL
Ao
GND
VDD
SI
CLK
GLED
VLED
IA2008-MB20A
Contact image sensor heads
zCharacteristics
Symbol
Typ.
Unit
Effective scanning width
−
212
mm
Primary scan dot density
−
8
pixel / mm
Total dot number
−
1728
dots
Power supply voltage
VDD
5
V
Scanning speed
SLT
5
ms / line
kHz
Parameter
Clock frequency
CLK
500
Maximum dynamic range
VRmax
1.6
V
Dark output
Vodmax
550
mV
−
5~45
°C
Operating temperature
zPin assignments
No.
Circuit
I/O
Functions
1
AO
O
Analog output
2
GND
I
Ground
3
VDD
I
Power supply
4
SI
I
Serial-in
5
CLK
I
Clock
6
GLED
I
LED ground
7
VLED
I
LED power supply
IA2008-MB20A
Contact image sensor heads
zTiming chart
(a) CLK Timing Chart
1/fCLK
tw1
tw2
0
CLK
1
11
12
13
tSETUP
tHOLD
SI
ts
Ao
1pixel
Fig.1
(b) Data Output Timing Chart
After turning on the SI pulse, the analog output shape starts from the setting up point of 12CLK pulse.
0
2
4
6
8
10
12
14
16
CLK
SI
1
2
3
4
5
Ao
Note) The CLK section area which is over the effective pixel numbers
(Output blank part) cannot be used as the analog Output standard level.
2pixel
IA2008-MB20A
Contact image sensor heads
zEquivalent circuit
1
VDD
1728
0.1µF×2
GND
AO
SI
1728 BIT SHIFT REGISTER
CLK
VLED
GLED
Fig.2
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