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AMIS-710251-A6: 200dpi CIS Module
Data Sheet
1.0 General Description
The AMIS-710251-A6 (PI251MC-A6) is a contact imaging sensor (CIS) module. It is a successor module to its predecessor, AMIS710222-A6 (PI222MC-A6). This possesses all qualities of its predecessor, except, it has one outstanding feature - it operates from a single 5V supply. Like its predecessor, it is composed of 13 AMIS-720220 (PI3020) sensor chips. The AMIS-720220 is a 200 dots per inch (dpi) solid-state line imaging array, also a product of AMI Semiconductor. This imaging device is fabricated using MOS imaging sensor technology for its high-speed performance and high sensitivity. Like its predecessor, the AMIS-710251-A6 is suitable for scanning A6 size (104mm) documents with 8 dots per millimeter (dpm) resolution. Applications include ticket, check and card scanners, variety of mark readers and other automation equipment.
2.0 Key Features
* * * * * * * * * Low power-single power supply at 5.0V Light source, lens and sensor are integrated into a single module 8dpm resolution, 104mm scanning length High speed page scan - up to 167sec/line @ 5MHz pixel rate Wide dynamic range Analog output Yellow-Green LED light source Compact size 14mm x 19mm x 120mm Light weight
3.0 Functional Description
The AMIS-710251-A6 consists of 13 imaging array sensors that are cascaded to provide 832 photo-detectors. Each sensor contains its associated multiplex switches, and a digital shift register that controls its sequential readout. Each sensor also contains a chip-select switch so that each following chip is accessed sequentially as its predecessor chip completes its scan. These chips are mounted on a printed circuit board (PCB) along with clock buffers and video signal amplifier. The only change from its predecessor module is in this amplifier. It has been slightly altered to gain the single supply feature through the application of the new rail-to-rail single volt operational amplifiers. See Figure 1.
Figure 1: AMIS-710251-A6 Module Block Diagram
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AMIS-710251-A6: 200dpi CIS Module
Data Sheet
The PCB containing the imaging array is enclosed in a module housing, along with a one-to-one graded indexed micro lens array that focuses the scanned documents' image onto the sensing line of the sensor chips. The document is illuminated with a LED light source which is also mounted in the housing. See Figure 2.
Figure 2: AMIS-710251-A6 Cross Sectional View
This pictorial cross section shows the LED bar light source and its illumination path. The light on the document reflects images of the document. The reflected images focus through the micro lens onto the chips' image sensing line where images are converted to proportional electrical charges. An on board amplifier processes these signal charges into proportional video signal voltages, which are sent out to the output video port. All components are housed in a small plastic housing and covered with a glass window. This cover glass not only serves to protect all of the critical components within the housing from dust, but, along with micro lens, plays a minor role in the depth-of-focus because it lies in the optical path.
4.0 Pin Out Description
There is one connector located at the end of the module. The outline of the module's housing in Figure 4 illustrates the connector location. With the module window facing down on the flat surface, the viewer looking down on backside of the module and the connector's pins facing viewer, the connector is located on the right-hand end of the module. The connector is a single row of 10-pin with a 1.25mm pin space. It is a JAE 1L-Z-10P-S125T3-E. Its I/O designation is provided in Table 1. The location of Pin 1 is indicated on the module outline.
Table 1: I/O Designation Pin Number 1 2 3 4 5 6 7 8 9 10 Symbol Vout Gnd (0V) Vdd (+5V) NA Gnd (0V) SP Gnd (0V) CP GLED VLED Names and Functions Analog video output Ground Positive power supply Not used Ground Shift register start pulse Ground Sampling clock pulse Ground for the light source Supply for the light source
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AMIS-710251-A6: 200dpi CIS Module
5.0 Absolute Maximum Rating
The following is a table of absolute maximum parameters. These parameters should not be used in prolonged operation.
Table 2: Absolute Maximum Rating Parameter Power supply
Data Sheet
Input clock pulse (high) Input clock pulse (low)
Symbols Vdd Idd VLED ILED Vih Vil
Maximum Rating 7.0 50 6.0 650 Vdd -0.5
Units V mA V mA V V
Table 3: Operating Environment Parameter Operating temperature Operating humidity Storage temperature Storage humidity
Symbols Top Hop Tstg Hstg
Maximum Rating 0 to 50 10 to 85 -25 to 85 5 to 95
Units C % C %
6.0 Electro-Optical Characteristics (25C)
Table 4: Electro-Optical Characteristics (25 C) Parameter Number of photo detectors Pixel-to-pixel spacing Line scanning rate Clock frequency (3) Bright output voltage Bright output non-uniformity (5) Adjacent pixel non-uniformity (6) Dark non-uniformity Dark output voltage (7) Modulation transfer function
Definition: 1. 2. 3. 4. 5. 6. Tint: line scanning rate or integration time. Tint is determined by the interval of two SP. Fclk: main clock frequency applied to into the module. It is also equal to the pixel frequency. Vpavg = Vp(n)/832; where Vp(n) is the nth pixel voltage value Up is defined as follows: Upmax= [(Vpmax - Vpavg) / Vpavg] x 100% and Upmin= [(Vpavg - Vpmin) / Vpavg] x 100%; where Upmax is determined by the highest nth video pixel, Vp(n), and Vpmin is determined by minimum pixel, Vp(n), then Up is selected from the largest of the two values |Upmax| or |Upmin|. Upadj is between two adjacent pixel's non-uniformity and defined as follows. Upadj = MAX[ | (Vp(n) - Vp(n+l) | / Vp(n)] x 100% Ud = Vdmax - Vdmin Vdmin is the minimum output in the dark. Vdmax: maximum output voltage in the light. MTF = [(Vmax - Vmin) / (Vmax + Vmin)] x 100 [%]. Depth of focus, DOF, range is defined with the MTF MTF is measured at glass surface to approximately 0.4mm from the glass surface, and is > 40 percent with its peaks at approximately mid-point, 0.2mm. Vmax: maximum output voltage at 50lp/inch (At 1/2 of the optical Nyquest frequency) Vmin: minimum output voltage at 50lp/inch lp / inch: line pair per inch
(4) (2)
Symbol
Tint
(1)
Parameter 832 125 170 5 1.0 <+/-30 <25 <50 27540
Units Elements m sec MHz V % % mV mV %
Note
@ 5MHz clock frequency Specified for Tint = 170sec
Fclk Video output Up Uadj Ud Vd MTF
See Note 7 for MTF & DOF
7.
8.
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AMIS-710251-A6: 200dpi CIS Module
Data Sheet
Table 5: Recommended Operating Conditions (25C) Item Symbol Power supply Vdd VLED Idd ILED Input voltage at digital high Vih Input voltage at digital low Vil (1) Clock frequency Fclk (2) Clock pulse high duty cycle (3) Clock pulse high duration (3) Integration time Tint Operating temperature Top
Notes: 1. 2. 3.
Min. 4.5 4.5 30 200 Vdd-1.0 0 25 50 0.167
Mean 5.0 5.0 35 360 Vdd-0.5 5.0
Max. 5.5 5.5 40 480 Vdd 0.6 5.5
25
5.0 50
Units V V ma ma V V MHz % ns ms C
The module will operate at 5.5MHz, but its performances cannot be guaranteed. Clock duty cycle is defined as the ratio of the high level duration divided by the duration of the clock period. Tint (min.) is the lowest line integration time available at 5.0MHz clock rate.
7.0 Switching Characteristics (25C)
Figure 3: Clock and Start Pulse Timing Diagram
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AMIS-710251-A6: 200dpi CIS Module
Data Sheet
The switching characteristics for the I/O clocks are shown in Figure 3. Its corresponding timing symbol definitions are given in Table 6.
Table 6: Symbol Definition for the Above Timing Diagram Item Symbol Clock cycle time to Clock pulse width tw Clock duty cycle Prohibit crossing time of SP tprh Data setup time tds Data hold time tdh Signal delay time tdl Signal settling time tsh Min. 0.2 50 25 15 20 20 50 120 Typ. Max. 4.0 75 Units s ns % ns ns ns ns ns
8.0 AMIS-710251-A6 Module and its Mechanical Dimensions
The sketch of this module is to provide a pictorial of the module size and structure. A detailed drawing is available upon request.
Figure 4: AMIS-710251-A6 Module Mechanical Outline
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AMIS-710251-A6: 200dpi CIS Module
9.0 Company or Product Inquiries
Data Sheet
For more information about AMI Semiconductor, our technology and our product, visit our Web site at: http://www.amis.com North America Tel: +1.208.233.4690 Fax: +1.208.234.6795 Europe Tel: +32 (0) 55.33.22.11 Fax: +32 (0) 55.31.81.12
Production Technical Data - The information contained in this document applies to a product in production. AMI Semiconductor and its subsidiaries ("AMIS") have made every effort to ensure that the information is accurate and reliable. However, the characteristics and specifications of the product are subject to change without notice and the information is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant information to verify that data being relied on is the most current and complete. AMIS reserves the right to discontinue production and change specifications and prices at any time and without notice. Products sold by AMIS are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. AMIS makes no other warranty, express or implied, and disclaims the warranties of noninfringement, merchantability, or fitness for a particular purpose. AMI Semiconductor's products are intended for use in ordinary commercial applications. These products are not designed, authorized, or warranted to be suitable for use in life-support systems or other critical applications where malfunction may cause personal injury. Inclusion of AMIS products in such applications is understood to be fully at the customer's risk. Applications requiring extended temperature range, operation in unusual environmental conditions, or high reliability, such as military or medical life-support, are specifically not recommended without additional processing by AMIS for such applications. Copyright (c) 2006 AMI Semiconductor, Inc.
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