NOM02B4 DR11G D

NOM02B4-DR11G
200DPI Contact Image
Sensor Module with Binary
Output
Description
The NOM02B4−DR11G contact image sensor (CIS) module
integrates a red LED light source, lens and image sensor in a compact
housing. The module is designed for document scanning, mark
reading, gaming and office automation equipment applications and is
suitable for scanning documents up to 256 mm wide with a scanning
rate of 410 msec/line. The analog output signal is processed by a
digitizing comparator referenced to an externally supplied voltage
level to produce a serial digital output. The NOM02B4−DR11G
module employs proprietary CMOS image sensing technology from
ON Semiconductor to achieve high−speed performance and high
sensitivity.
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IMAGE SENSOR MODULE B4
CASE MODAJ
Features
FIFO Buffer
Scan System
Timing and Control
Motor
Motor Controller
and Driver
THR
SP+
VDD
DVOUT+
11
9
7
5
3
1
14
12
10
8
6
4
2
−
SP−
GND
−
DVOUT−
ORDERING INFORMATION
LED Drivers
Paper Insertion
Sensing Switch
13
GND
Parallel Port
Transceiver
CONNECTOR PIN ASSIGNMENT
CP+
Contact Image
Sensor Module
= Year
= Month
= Serial Number
= Pb−Free Package
CP−
−
•
•
Machines
Document Scanning
Office Automation Equipment
YY
MM
SSSSSS
G
VLED
• Mark Readers Including Balloting, Test Scoring and Gaming
NOM02B4−DR11G
YYMMSSSSSS
GLED
Applications
MARKING DIAGRAM
VLED
Light Source, Lens and Sensor are Integrated Into a Single Module
256 mm Scanning Width at 8 dots per mm Resolution
410 msec/Line Scanning Speed @ 5.0 MHz Pixel Rate
Two−Level Tracking Digital Output
Differential LVDS Input and Output Signals
Supports B4 Paper Size at up to 52 Pages per Minute
Red LED Light Source
Wide Dynamic Range, Low Power
Compact 272.0 mm x 24.3 mm x 21.5 mm Module Housing
Light Weight 2.4 oz Packaging
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
GLED
•
•
•
•
•
•
•
•
•
•
•
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
Figure 1. Typical Scanner Application
© Semiconductor Components Industries, LLC, 2012
June, 2012 − Rev. 1
1
Publication Order Number:
NOM02B4−DR11G/D
NOM02B4−DR11G
Table 1. ORDERING INFORMATION
Part Number
NOM02B4−DR11G
Package
Shipping Configuration
(Pb−Free)
100 per packing carton
Red LED Light Bar
VLED
GLED
VDD
Rod Lens
GND
Photo Sensor Array
SP+
SP−
Buf
CP+
CP−
Buf
1
2
3
4
2048
Shift Register
THR
Pixel 1 corresponds to connector end of the module
Figure 2. Simplified Block Diagram
Table 2. PIN FUNCTION DESCRIPTION
Pin
Pin Name
Description
1
DVOUT+
Digital Video Output (+)
2
DVOUT−
Digital Video Output (−)
3
VDD
+5 V power supply
4
GND
Ground
5
SP+
Shift register start pulse (+)
6
SP−
Shift register start pulse (−)
7
THR
Reference voltage input
8
GND
Ground
9
CP+
Sampling clock pulse (+)
10
CP−
Sampling clock pulse (−)
11
VLED
Power supply for the LED light source
12
GLED
Ground for the LED light source
13
VLED
Power supply for the LED light source
14
GLED
Ground for the LED light source
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2
Comparator
DVOUT+
DVOUT−
NOM02B4−DR11G
Table 3. ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Value
Unit
VDD
7
V
VLED
6
V
Power supply current
ILED
980
mA
Input voltage range for SP±, CP±
Vin
−0.5 to VDD + 0.5
V
Vin_thr
0 to VDD
V
Storage Temperature
TSTG
−20 to 75
°C
Storage Humidity, Non−Condensing
HSTG
10 to 90
%
ESDHBM
$2
kV
Power supply voltage
Input voltage range for THR
ESD Capability, Contact Discharge (Note 1)
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. This module assembly has been ESD tested to IEC61000−4−2 (HBM) Contact Discharge
Table 4. RECOMMENDED OPERATING RANGES (Unless otherwise specified, these specifications apply TA = 25°C) (Note 2)
Parameter
Symbol
Min
Typ
Max
Unit
VDD
4.5
5
5.5
V
VLED
4.5
5
5.5
V
IDD
86
96
106
mA
ILED
630
650
670
mA
Low level input voltage for SP±, CP±
VIL
0
0
0.8
V
High level input voltage for SP±, CP±
VIH
4.5
5.0
VDD + 0.3
V
VTHR
1.2
1.75
2.3
V
Power supply voltage (Note 3)
Power supply current
Threshold voltage level
Low level output voltage (digital output level for dark)
VOL
0.8
V
High level output voltage (digital output level for white)
VOH
4.0
V
Line scanning rate (Note 4)
Tint
372
410
1024
ms
Clock frequency (Note 5)
f
2.0
5.0
5.5
MHz
Clock period
to
182
200
500
ns
Clock pulse width (Note 6)
tw
46
50
125
ns
Clock pulse high duty cycle
DCCP
20
25
75
%
twSP
150
180
480
ns
Start pulse setup time
tsu
20
ns
Start pulse hold time
th
20
ns
Prohibit crossing time (Note 7)
tprh
20
ns
Clock to Video output propagation delay rising
tpcor
115
ns
Clock to Video output propagation delay falling
tpcof
20
Operating Temperature
Top
0
50
°C
Operating Humidity, Non−Condensing
Hop
10
60
%
Start pulse width (Note 6)
2.
3.
4.
5.
6.
7.
ns
Refer to Figure 3 for more information on AC characteristics
VLED directly affects illumination intensity, which directly affects DVOUT.
Tint is the line scanning rate or integration time. Tint is determined by the interval between two start pulses. The clock is proportional to Tint.
Main clock frequency (f) corresponds to the video sampling frequency.
Min, Typ, Max specifications reflect operation at the corresponding Min, Typ, Max clock frequency.
Prohibit crossing time is to insure that two start pulses are not supplied in the same scan line time. SP may only be active high during one
falling edge of CP for any given scan.
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NOM02B4−DR11G
Table 5. PHYSICAL SPECIFICATIONS
Symbol
Typ
Unit
Scan width
Parameter
PDw
256
mm
Number of Photo Detector Arrays
PDAn
32
arrays
PDn
2048
elements
Number of Photo Detectors
Table 6. PHYSICAL CHARACTERISTICS
Parameter
Pixel pitch
Symbol
Min
PDsp
Typ
Max
125
Unit
mm
Inter−array spacing
PDAsp
150
180
210
mm
Inter−array vertical alignment
PDAvxp
−40
0
40
mm
lp
634
644
nm
Red LED peak wavelength
Table 7. ELECTRO−OPTICAL CHARACTERISTICS TEST CONDITIONS
Parameter
Value
Unit
VDD
5.0
V
VSS
−5.0
V
VLED
5.0
V
f
5.0
MHz
DCCP
25
%
Line scanning rate
Tint
410
ms
Operating Temperature
Top
25
°C
Power supply voltage
Clock frequency
Clock pulse high duty cycle
Symbol
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NOM02B4−DR11G
Table 8. ELECTRO−OPTICAL CHARACTERISTICS (Unless otherwise specified, these specifications were achieved with the
test conditions defined in Table 7)
Symbol
Parameter
Min
Typ
Max
1.0
1.2
V
30
%
Bright analog output voltage (Note 8)
Vpavg
0.8
Bright output non−uniformity (Note 9)
Up
−30
Unit
Bright output non−uniformity total (Note 10)
Uptotal
60
%
Adjacent pixel non−uniformity (Note 11)
Upadj
25
%
Dark output voltage (Note 12)
Vd
1500
mV
Dark non−uniformity (Note 13)
Ud
60
mV
Modulation transfer function at 50 line pairs per in (lp/in) (Note 14)
MTF50
40
%
Modulation transfer function at 100 line pairs per in (lp/in)
(Notes 14, 15)
MTF100
20
%
8. Vpavg = Ȍ Vp(n)/2048, where
Vp is the pixel amplitude value for a bright signal defined as a white document with LEDs turned on,
n is the sequential pixel number in one scan line.
9. Up = [(Vpmax – Vpavg)/Vpavg] x 100%, or [Vpavg – Vpmin)/Vpavg] x 100%, whichever is greater, where
Vpmax is the maximum pixel voltage of any pixel at full bright
Vpmin is the minimum pixel voltage of any pixel at full bright
10. Uptotal = [(Vpmax – Vpmin)/Vpavg] x 100%,
11. Upadj = MAX [ | (Vp(n) – Vp(n+1) | / Vp(n)] x 100%, where
Upadj is the nonuniformity in percent between adjacent pixels for a bright background
12. Vd is the pixel amplitude value for a dark signal defined as a black document with LEDs turned off
13. Ud = Vdmax – Vdmin, where
Vdmax is the maximum pixel voltage of any dark pixel with the LEDs turned off
Vdmin is the minimum pixel voltage of any dark pixel with the LEDs turned off
14. MTF = [(Vmax – Vmin)/(Vmax + Vmin)] x 100%, where
Vmax is the maximum output voltage at the specified line pairs per inch (lp/in)
Vmin is the minimum output voltage at the specified lp/in
15. For information only.
to
tw
CP
tprh
tprh
th
SP
tsu
tpcof
twSP
Vd
VOUT
GND
Vp
tpcor
Pixel 1
Pixel 2
Figure 3. Timing Diagram
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5
Pixel 3
Pixel 4
NOM02B4−DR11G
DESCRIPTION OF OPERATION
be digitized is fed into the scanner where a sensor detects its
The NOM02B4−DR11G module consists of 32 contact
presence. The scanner then operates the motor to move the
image sensors, each with 64 pixel elements, that are
paper under the contact image sensor module. The module
cascaded to provide 2048 photo−detectors with their
illuminates the paper with internal LEDs and the image
associated multiplex switches and double−buffered digital
sensor pixel array detects the amount of reflected light and
shift register that controls its sequential readout. The analog
simultaneously measures a full line of pixels which are
pixel signal is proportional to the exposure on the
sampled and transferred to a FIFO for storage and
corresponding picture elements on the document. A
conversion to a parallel output format. Once the pixel line is
comparator digitizes the analog pixels into a serial binary bit
processed, the motor advances the paper and the next scan
stream as each pixel is compared to the external reference
line is captured.
voltage THR as shown in Figure 2. In operation, the sensor
Initialization
module produces a binary one for each pixel with a voltage
above THR and a binary zero for each pixel with a voltage
below THR. The DVOUT signal outputs 2048 pixels for
Document
no
each scan line. The first bit shifted out from DVOUT during
Detected?
each scan represents the first pixel on the connector end of
the module.
Start Scan
A pictorial of the NOM02B4−DR11G cross section view
SP=
, CP=
CTR=0
is shown in Figure 4. Mounted in the module is a one−to−one
graded−index micro lens array that focuses the scanned
CP=
document image onto the sensing plane. Illumination is
accomplished by means of an integrated LED light source.
Read Pixel into Memory
All components are housed in a small plastic housing, which
has a glass cover. The top surface of the glass acts as the focal
no
point for the object being scanned and protects the imaging
CTR++ == 2048
array, micro lens assembly and LED light source from dust.
Functional Description
Glass Window
Document Surface
Transfer Scan Line Data
Light Path
Rod
Lens
Module Housing
Document
Detected?
LED Bar
yes
Done
Figure 5. Typical Scanner Algorithm
Sensors
Figure 5 outlines the basic steps in the scanner control
sequence. First the circuits are initialized and the scanner
waits for a document to be detected, usually by a paper
sensing switch. Then a start pulse and clock pulse are
supplied to capture a line image. At the next clock pulse the
first pixel value appears on the output. The pixel can be
stored in a local line buffer memory. Subsequent clocks
cause the remaining pixels to be shifted out and stored in the
line buffer. Once the complete line has been shifted out it can
be transferred to the host application and the system
advances the paper and the line scan process repeats until the
paper sensing switch indicates the document has passed
completely through the scanner.
PCB
Figure 4. Module Cross Section View
Digital Video Output
The NOM02B4−DR11G module only presents a digital
output, however module performance is best understood by
analyzing the analog nature of the internal circuitry.
Characterization of the analog signal is presented in Table 4.
Connector Pin Out Description
Connections to the module are via a 9.14x25.40mm
14−pin connector (AMP part number 103308−2) located at
one end of the module as shown in the package drawing on
page 8. The location of pin number 1 is indicated on the
package drawing.
Scanner Applications
A typical use of the NOM02B4−DR11G module in
scanner applications is shown in Figure 6. The document to
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NOM02B4−DR11G
Device Marking and Barcode Description
where
Each module is marked with a tag that contains the part
number, a number combining the manufacturing date code
and serial number and a barcode. The barcode presents the
date code and serial number in Interleave 2 of 5 barcode
format as follows
YYMMSSSSSS
YY is the year,
MM is the month, and
SSSSSS is the serial number.
Glass Lens Care
Precautions should be taken to avoid scratching or
touching the glass lens. The glass lens may be cleaned with
alcohol.
Figure 6. Typical Scanner Assembly
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NOM02B4−DR11G
PACKAGE DIMENSIONS
IMAGE SENSOR MODULE B4
CASE MODAJ
ISSUE O
MILLIMETERS
DIM MIN
MAX
A
12.60
13.20
A1
5.63
5.93
A2
1.90
2.10
A3
5.98
6.18
A4
21.45 REF
B
17.70
18.30
B1
24.32 REF
B2
5.50
6.50
B3
15.85
16.15
B4
13.85
14.15
C
15.35
15.65
D 271.50 272.50
D1
256.00 REF
E
2.05
2.35
F
1.51 REF
H
16.00 REF
J
2.00 REF
K
7.00
9.00
L
6.80 REF
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. LEADING EDGE OF THE APPROACH ANGLE ON THE GLASS IS
LOWER THAN THE TOP OF THE HOUSING.
4. BORE DEPTH IS 6.0.
5. CONNECTOR, AMP MODEL NUMBER 103308−2, 2X7 PIN,
PITCH 2.54.
6. GLASS IS GLUED ON ALL 4 SIDES.
7. GLASS THICKNESS IS 1.85.
8. USE M2.3 SELF TAPPING SCREWS FOR MOUNTING. TORQUE
SCREWS BETWEEN 1.80 KGF−CM AND 2.00 KGF−CM.
9. DIMENSION D1 DENOTES THE SCAN LENGTH.
10. DIMENSION K DENOTES THE POSITION OF THE FIRST PIXEL.
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NOM02B4−DR11G
PACKING DIMENSIONS
NO.
NAME
MATERIAL
1
Shockproof Pad
EPE
2
Packing Tray
POLYFOAM
3
Conduct Electricity Sheet
PE + CONDUCTIVE SHEET
4
Waterproof Bag
PE
5
Packing Box−Carton
KRAFT PAPER
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NOM02B4−DR11G/D