? semiconductor components industries, llc, 2012 march, 2012 ? rev. 0 1 publication order number: nom04a7 ? ar11g/d NOM04A7-AR11G 400 dpi ultra high-speed contact image sensor module description the nom04a7 ? ar11g 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 89 mm wide. an analog video achieves a scanning rate of 423 sec/line. the nom04a7 ? ar11g module employs proprietary cmos image sensing technology from on semiconductor to achieve high ? speed performance and high sensitivity. features ? light source, lens and sensor are integrated into a single module ? 89 mm scanning width at 15.8 dots per mm resolution ? 423 sec/line scanning speed @ 3.33 mhz pixel rate ? analog video output ? supports a7 paper size at up to 86 pages per minute ? red led light source ? wide dynamic range ? compact 101.5 mm x 25.3 mm x 14.85 mm module housing ? low power ? light weight 1.3 oz packaging ? these devices are pb ? free, halogen free/bfr free and are rohs compliant applications ? currency verification ? document scanning ? mark readers including balloting, test scoring and gaming machines ? office automation equipment figure 1. typical scanner application motor contact image sensor module paper insertion sensing switch motor controller and driver scan system timing and control analog to digital converters parallel port transceiver led drivers dsp image sensor module a7 case modam tag marking http://onsemi.com connector pin assignment yy = year mm = month ssssss = serial number vout gnd vdd nc gnd sp gnd cp gled vled 1 2 3 4 5 6 7 8 9 10 yymmssssss nom04a7 ? ar11g see detailed ordering and shipping information in the package dimensions section on page 2 of this data sheet. ordering information
nom04a7 ? ar11g http://onsemi.com 2 table 1. ordering information part number package shipping configuration nom04a7 ? ar11g modam (pb ? free) 100 per packing carton 1 2 3 4 1408 photo sensor array rod lens buf buf vled gled vdd (+5v) gnd sp cp red led light bar pixel 1 corresponds to connector end of the module amp vout figure 2. simplified block diagram shift register table 2. pin function description pin pin name description 1 vout analog video output 2 gnd ground 3 vdd +5 v power supply 4 nc not connected 5 gnd ground 6 sp shift register start pulse 7 gnd ground 8 cp sampling clock pulse 9 gled ground for the led light source 10 vled power supply for the led light source
nom04a7 ? ar11g http://onsemi.com 3 table 3. absolute maximum ratings parameter symbol value unit power supply voltage vdd 7 v vled 6 v power supply current iled 300 ma input voltage range for sp, cp v in ? 0.5 to vdd+0.5 v storage temperature t stg ? 20 to 75 c storage humidity, non-condensing h stg 10 to 90 % esd capability, contact discharge (note 1) esd hbm 2 kv stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above t he recommended operating conditions is not implied. extended exposure to stresses above the recommended operating conditions may af fect 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 t a = 25 c) (note 2) parameter symbol min typ max unit power supply voltage (note 3) vdd 4.5 5 5.5 v vled 4.5 5 5.5 v power supply current i dd 28 32 36 ma i led 130 180 235 ma low level input voltage for sp, cp v il vss ? 0.3 0 0.8 v high level input voltage for sp, cp v ih 4.5 5.0 vdd + 0.3 v line scanning rate (note 4) t int 282 423 2816 s clock frequency (note 5) f 0.5 3.33 5.0 mhz clock period t o 200 300 2000 ns clock pulse width (note 6) t w 50 75 500 ns clock pulse high duty cycle dc cp 25 50 75 % start pulse width (note 6) t wsp 150 225 1500 ns start pulse setup time t su 20 ns start pulse hold time t h 20 ns prohibit crossing time (note 7) t prh 20 ns clock to video output propagation delay rising t pcor 100 ns clock to video output propagation delay falling t pcof 20 ns operating temperature t op 0 50 c operating humidity, non-condensing h op 10 60 % 2. refer to figure 3 for more information on ac characteristics. 3. vled directly affects illumination intensity, which directly affects vout. 4. tint is the line scanning rate or integration time. tint is determined by the interval between two start pulses. the clock is proportional to t int. 5. main clock frequency (f) corresponds to the video sampling frequency. 6. min, typ, max specifications reflect operation at the corresponding min, typ, max clock frequency. 7. 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. table 5. physical specifications parameter symbol typ unit scan width pd w 89 mm number of photo detector arrays pda n 11 arrays number of photo detectors pd n 1408 elements
nom04a7 ? ar11g http://onsemi.com 4 table 6. specifications parameter symbol min typ max unit pixel pitch pd sp 62 m inter ? array spacing pda sp 150 180 210 m inter ? array vertical alignment pda vxp ? 40 0 40 m red led peak wavelength p 653 667 nm table 7. electro-optical characteristics test conditions parameter symbol value unit power supply voltage vdd 5.0 v vled 5.0 v clock frequency f 3.33 mhz clock pulse high duty cycle dc cp 25 % line scanning rate t int 423 s led arrays pulsed time on (note 8) led_ton 26 ms led arrays pulsed time off (note 8) led_toff 356 ms operating temperature t op 25 c 8. production tested with pulsing leds. table 8. electro ? optical characteristics (unless otherwise specified, these specifications were achieved with the test conditions defined in table 7) parameter symbol min typ max unit bright analog output voltage (note 9) v pavg 1.8 1.9 2.0 v bright output non-uniformity (note 10) u p -30 30 % bright output non-uniformity total (note 11) u ptotal 60 % adjacent pixel non-uniformity (note 12) u padj 25 % dark output voltage (note 13) v d 500 mv dark non-uniformity (note 14) u d 80 mv modulation transfer function at 100 line pairs per in (lp/in) (note 15) mtf 100 40 % modulation transfer function at 200 line pairs per in (lp/in) (notes 15, 16) mtf 200 20 % 9. vpavg = vp(n)/1408, where vp is the pixel amplitude value of vout in volts for a bright signal defined as a white document with leds turned on, n is the sequential pixel number in one scan line. 10. 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 11. uptotal = [(vpmax ? vpmin)/vpavg] x 100%, 12. 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 13. vd is the pixel amplitude value of vout in volts for a dark signal defined as a black document with leds turned off 14. 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 15. 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 16. for information only.
nom04a7 ? ar11g http://onsemi.com 5 figure 3. timing diagram cp sp vout pixel 1 pixel 2 pixel 3 pixel 4 gnd t pcof t w t pcor t prh t su t wsp t h t o t prh v d v p
nom04a7 ? ar11g http://onsemi.com 6 description of operation functional description the nom04a7 ? ar11g module consists of 11 contact image sensors, each with 128 pixel elements, that are cascaded to provide 1408 photo ? detectors with their associated multiplex switches and a double ? buffered digital shift register that controls its sequential readout. the buffer amplifies the video pixels from the image sensors and outputs an analog video signal of the module as shown in figure 2. in operation, the sensors produce analog image pixel signals (or video signals) proportional to the exposure on the corresponding picture elements on the document. the vout signal outputs 1408 pixels for each scan line. the first bit shifted out from vout during each scan represents the first pixel on the connector end of the module. a pictorial of the nom04a7 ? ar11g 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 document image onto the sensing plane. illumination is accomplished by means of an integrated led light source. all components are housed in a small plastic housing, which 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. figure 4. module cross section view pcb sensors rod lens led bar module housing document glass window light path surface connector pin out description connections to the module are via a 2.7 x 14.7 mm 10 ? pin connector (molex part number 52207 ? 1090) 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 nom04a7 ? ar11g 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 processed, the motor advances the paper and the next scan line is captured. figure 5. typical scanner algorithm initialization document detected? start scan read pixel into memory transfer scan line data done ctr++ == 1408 no no yes document detected? cp= sp= cp= ctr=0 , 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. 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. glass lens care precautions should be taken to avoid scratching or touching the glass lens. the glass lens may be cleaned with alcohol.
nom04a7 ? ar11g http://onsemi.com 7 figure 6. typical scanner assembly nom02a4-mw60g yymmssssss nom02a4-mw60g yymmssssss paper roller cis module stepper motor paper sense switch paper flow
nom04a7 ? ar11g http://onsemi.com 8 package dimensions image sensor module case modam issue o notes: 1. dimensioning and tolerancing per asme y14.5m, 1994. 2. controlling dimension: millimeters. 3. glass is glued along the 2 long sides. neither gap, trench, nor step is allowed at the two long bound- aries between the glass and the housing. 4. bore depth is 4.3 with a chamfer depth of 0.2. 5. connector, molex fpc zif smt part number 52207 ? 1085 or equivalent, 1 x 10 pin, pitch 1.00. 6. dimension d1 denotes the scan length. 7. dimension k denotes the position of the first pixel. dim a min max 14.35 15.35 millimeters a1 5.85 6.45 b 23.90 24.50 b2 6.00 7.00 d1 89.00 ref e 1.75 1.85 h2 70.45 71.05 c 21.70 22.30 d 101.00 102.00 a2 13.10 14.10 b1 25.00 25.60 h1 25.05 25.65 h 4.70 5.30 j 5.30 5.70 k 1.70 3.70
nom04a7 ? ar11g http://onsemi.com 9 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 on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to mak e changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for an y particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including wi thout limitation special, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different application s and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its of ficers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, direct ly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws and is not for resale in any manner. publication ordering information n. american technical support : 800 ? 282 ? 9855 toll free usa/canada europe, middle east and africa technical support: phone: 421 33 790 2910 japan customer focus center phone: 81 ? 3 ? 5817 ? 1050 nom04a7 ? ar11g/d literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 303 ? 675 ? 2175 or 800 ? 344 ? 3860 toll free usa/canada fax : 303 ? 675 ? 2176 or 800 ? 344 ? 3867 toll free usa/canada email : orderlit@onsemi.com on semiconductor website : www.onsemi.com order literature : http://www.onsemi.com/orderlit for additional information, please contact your loca l sales representative
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