ON NOM02A4-MW60G 200dpi ultra high-speed contact image sensor module Datasheet

NOM02A4-MW60G
200DPI Ultra High-Speed
Contact Image Sensor
Module
Description
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The NOM02A4−MW60G contact image sensor (CIS) module
integrates a white 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 216 mm wide. Four
parallel analog video outputs are used to achieve an ultra high−speed
scanning rate of 90 ms/line. The NOM02A4−MW60G module
employs proprietary CMOS image sensing technology from
ON Semiconductor to achieve high−speed performance and high
sensitivity.
IMAGE SENSOR MODULE A4
CASE MODAB
Features
MARKING DIAGRAM
NOM02A4−MW60G
YYMMSSSSSS
YY
MM
SSSSSS
G
= Year
= Month
= Serial Number
= Pb−Free Package
GND
VOUT3
VOUT4
VDD
SP
GND
CP
VSS
GLED
VLED
CONNECTOR PIN ASSIGNMENT
VOUT2
Light Source, Lens and Sensor are Integrated Into a Single Module
216 mm Scanning Width at 7.9 dots per mm Resolution
90 msec/Line Scanning Speed @ 5.0 MHz Pixel Rate
Four Parallel Analog Video Outputs
Supports A4 Paper Size at up to 286 Pages per Minute
White LED Light Source
Wide Dynamic Range
Compact 232.1 mm x 19.2 mm x 13.7 mm Module Housing
Low Power
Light Weight 2.5 oz Packaging
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
VOUT1
•
•
•
•
•
•
•
•
•
•
•
1
2
3
4
5
6
7
8
9
10
11
12
Applications
• Currency Verification
• Document Scanning
• Mark Readers Including Balloting, Test Scoring and Gaming
•
Machines
Office Automation Equipment
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
4
Contact Image
Sensor Module
Analog to Digital
Converters
DSP
LED Drivers
Parallel Port
Transceiver
Paper Insertion
Sensing Switch
Scan System
Timing and Control
Motor
Motor Controller
and Driver
Figure 1. Typical Scanner Application
© Semiconductor Components Industries, LLC, 2015
April, 2015 − Rev. 2
1
Publication Order Number:
NOM02A4−MW60G/D
NOM02A4−MW60G
Table 1. ORDERING INFORMATION
Part Number
NOM02A4−MW60G
Package
Shipping Configuration
(Pb−free)
100 per packing carton
White LED Light Bar
VLED
GLED
VDD (+5 V)
Rod Lens
GND
VSS (−5 V)
Amp
VOUT4
Amp
VOUT3
Amp
VOUT2
Amp
VOUT1
Photo Sensor Array
SP
Buf
CP
Buf
1
2
3
4
1728
Shift Register
VOUT1 Pixels 1 to 448
VOUT2 Pixels 449 to 896
VOUT3 Pixels 897 to 1344
VOUT4 Pixels 1345 to 1728
Pixel 1 corresponds to connector end of the module
Figure 2. Simplified Block Diagram
Table 2. PIN FUNCTION DESCRIPTION
Pin
Pin Name
Description
1
VOUT1
Analog Video Output 1
2
VOUT2
Analog Video Output 2
3
GND
4
VOUT3
Ground
Analog Video Output 3
5
VOUT4
Analog Video Output 4
6
VDD
7
SP
8
GND
+5 V power supply
Shift register start pulse
Ground
9
CP
10
VSS
Sampling clock pulse
11
GLED
Ground for the LED light source
12
VLED
Power supply for the LED light source
−5 V to −12 V power supply
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NOM02A4−MW60G
Table 3. ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Value
Unit
VDD
7
V
VSS
−15
V
VLED
6
V
Power supply current
ILED
550
mA
Input voltage range for SP, CP
Vin
−0.5 to VDD + 0.5
V
TSTG
−20 to 75
°C
HSTG
10 to 90
%
ESDHBM
$2
kV
Power supply voltage
Storage Temperature
Storage Humidity, Non−Condensing
ESD Capability, Contact Discharge (Note 1)
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
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)
Symbol
Min
Typ
Max
Unit
VDD
4.5
5
5.5
V
VSS
−12
−5
−4.5
V
VLED
4.5
5
5.5
V
IDD
50
87
95
mA
ISS
20
25
30
mA
ILED
270
350
430
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
Line scanning rate (Note 4)
Parameter
Power supply voltage (Note 3)
Power supply current
Tint
75
90
224
ms
Clock frequency (Note 5)
f
2.0
5.0
6.0
MHz
Clock period
to
166
200
500
ns
Clock pulse width (Note 6)
tw
42
50
125
ns
Clock pulse high duty cycle
DCCP
20
25
60
%
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 (Note 8)
tpcor
100
ns
Clock to Video output propagation delay falling (Note 8)
tpcof
20
ns
Operating Temperature
Top
0
50
°C
Operating Humidity, Non−Condensing
Hop
10
60
%
Start pulse width (Note 6)
2.
3.
4.
5.
6.
7.
Refer to Figure 3 for more information on AC characteristics
VLED directly affects illumination intensity, which directly affects VOUT.
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.
8. Applies to VOUT1, VOUT2, VOUT3 and VOUT4 which have identical electrical characteristics. The only physical difference is the active
scan length of VOUT4 which has 64 less pixels.
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NOM02A4−MW60G
Table 5. PHYSICAL SPECIFICATIONS
Symbol
Typ
Unit
Scan width
Parameter
PDw
216
mm
Number of Photo Detector Arrays
PDAn
27
arrays
PDn
1728
elements
PDn1,2,3
448
elements
PDn4
384
elements
Number of Photo Detectors
Number of Photo Detectors for VOUT1, VOUT2, VOUT3
Number of Photo Detectors for VOUT4
Table 6. PHYSICAL CHARACTERISTICS
Parameter
Pixel pitch
Symbol
Min
PDsp
Typ
Max
Unit
mm
125
Inter−array spacing
PDAsp
150
180
210
mm
Inter−array vertical alignment
PDAvxp
−40
0
40
mm
X
Y
0.2
0.16
0.24
0.23
0.305
0.31
White LED chromaticity coordinates
Table 7. ELECTRO−OPTICAL CHARACTERISTICS TEST CONDITIONS
Parameter
Symbol
Value
Unit
VDD
5.0
V
VSS
−5.0
V
VLED
5.0
V
f
5.0
MHz
DCCP
25
%
Tint
90
ms
LED arrays pulsed time on (Note 9)
LED_Ton
26
ms
LED arrays pulsed time off (Note 9)
LED_Toff
356
ms
Top
25
°C
Power supply voltage
Clock frequency
Clock pulse high duty cycle
Line scanning rate
Operating Temperature
9. Production tested with pulsing LEDs.
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NOM02A4−MW60G
Table 8. ELECTRO−OPTICAL CHARACTERISTICS (Unless otherwise specified, these specifications were achieved with the
test conditions defined in Table 7)
Parameter
Bright analog output voltage (Note 10)
Bright output non−uniformity (Note 11)
Symbol
Min
Typ
Max
Unit
Vpavg
0.9
1.0
1.1
V
Up
−30
30
%
Bright output non−uniformity total (Note 12)
Uptotal
60
%
Adjacent pixel non−uniformity (Note 13)
Upadj
25
%
Dark output voltage (Note 14)
Vd
200
mV
Dark non−uniformity (Note 15)
Ud
75
mV
Modulation transfer function at 50 line pairs per in (lp/in) (Note 16)
MTF50
40
%
Modulation transfer function at 100 line pairs per in (lp/in)
(Notes 16, 17)
MTF100
20
%
10. Vpavg = Ȍ Vp(n)/1728, where
Vp is the pixel amplitude value of VOUT for a bright signal defined as a white document with LEDs turned on,
n is the sequential pixel number in one scan line.
11. 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
12. Uptotal = [(Vpmax – Vpmin)/Vpavg] x 100%,
13. 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
14. Vd is the pixel amplitude value of VOUT for a dark signal defined as a black document with LEDs turned off
15. 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
16. 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
17. For information only.
to
tw
CP
tprh
tprh
th
SP
tsu
tpcof
twSP
Vd
Vp
VOUT
GND
tpcor
Pixel 1
Pixel 2
Figure 3. Timing Diagram
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5
Pixel 3
Pixel 4
NOM02A4−MW60G
DESCRIPTION OF OPERATION
processed, the motor advances the paper and the next scan
The NOM02A4−MW60G module consists of 27 contact
line is captured.
image sensors, each with 64 pixel elements, that are
Initialization
cascaded to provide 1728 photo−detectors with their
associated multiplex switches and four double−buffered
digital shift registers that control its sequential readout. Four
Document
no
buffer amplifiers amplify the video pixels from the image
Detected?
sensors and output the four analog video signals of the
module as shown in Figure 2. In operation, the sensors
Start Scan
produce analog image pixel signals (or video signals)
SP=
, CP=
CTR=0
proportional to the exposure on the corresponding picture
elements on the document. Each of the VOUT1, VOUT2
CP=
and VOUT3 signals output 448 pixels for each scan line. The
VOUT4 signal outputs 384 valid pixels followed by 64 null
Read 4 Pixels into Memory
pixels for each scan line. The first bit shifted out from
VOUT1 during each scan represents the first pixel on the
no
connector end of the module.
CTR++ == 448
A pictorial of the NOM02A4−MW60G cross section view
is shown in Figure 4. Mounted in the module is a one−to−one
graded−index micro lens array that focuses the scanned
Transfer Scan Line Data
document image onto the sensing plane. Illumination is
accomplished by means of an integrated LED light source.
Document
yes
All components are housed in a small plastic housing, which
Detected?
has a glass cover. The top surface of the glass acts as the focal
point for the object being scanned and protects the imaging
array, micro lens assembly and LED light source from dust.
Done
Functional Description
Glass Window
Document Surface
Figure 5. Typical Scanner Algorithm
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.
Light Path
Rod
Lens
Module Housing
LED Bar
Sensors
PCB
Figure 4. Module Cross Section View
Connector Pin Out Description
Connections to the module are via a 3.5 x 16.75mm
12−pin connector (Molex part number 53048−1210) 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.
Device Marking and Barcode Description
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
where
YY is the year,
MM is the month, and
SSSSSS is the serial number.
Scanner Applications
A typical use of the NOM02A4−MW60G module in
scanner applications is shown in Figure 6. The document to
be digitized is fed into the scanner where a sensor detects its
presence. The scanner then operates the motor to move the
paper under the contact image sensor module. The module
illuminates the paper with internal LEDs and the image
sensor pixel array detects the amount of reflected light and
simultaneously measures a full line of pixels which are
sampled and transferred to a FIFO for storage and
conversion to a parallel output format. Once the pixel line is
Glass Lens Care
Precautions should be taken to avoid scratching or
touching the glass lens. The glass lens may be cleaned with
alcohol.
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NOM02A4−MW60G
Figure 6. Typical Scanner Assembly
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NOM02A4−MW60G
PACKAGE DIMENSIONS
IMAGE SENSOR MODULE A4
CASE MODAB
ISSUE B
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 WITH A 0.2 LEAD−IN CHAMFER.
5. CONNECTOR ASSEMBLY; MOLEX 53048−1210, 1 X 12 PIN, PITCH 1.25.
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.
MILLIMETERS
DIM MIN
MAX
A
12.60
13.60
A1
5.45
6.45
A2
0.58 REF
B
17.70
18.30
B1
18.70
19.30
B2
5.50
6.50
C
15.30
15.70
D 231.50 232.50
D1
216.00 REF
E
2.15
2.25
F 112.50 113.50
H
34.50
35.50
J
5.70
6.30
K
5.30
7.30
L
6.00 REF
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NOM02A4−MW60G
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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NOM02A4−MW60G/D
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