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AMIS-710208-A7: 200dpi CIS Module
Data Sheet
1.0 General Description
The AMIS-710208-A7 (PI208MC-A7) is a contact image sensor (CIS) module containing contact image sensors, using MOS image sensor technology for high-speed performance and high sensitivity. The AMIS-710208-A7 is designed to scan documents with a short read length of 88mm. The module produces a single stream of sampled analog video proportional to images of a single horizontal line scan that is stepped vertically down a document page with a resolution of 8 dots per millimeter (dpm) and a width of 88mm. Applications include fax machines, game systems, variety of mark readers, and other automation equipment requiring document scanners.
2.0 Key Features
* * * * * * * * Light source, lens and sensor are integrated into a single module 8dpm resolution, 88mm scanning length Up to 176sec/line scanning speed, with 4MHz pixel rate (see Table 3, Note 2) Wide dynamic range 660nm light source Compact size 13mm x 25.6mm x 102mm Low-power Light weight
3.0 Functional Description
The AMIS-710208-A7 imaging array consists of 11 AMIS-720233 (PI3033B) sensors, produced by AMIS, which are cascaded together to provide 704 photo-detectors (pixels) with their associated multiplex switches, and a digital shift register that controls its sequential readout. Each sensor is sequentially connected to initiate its scanning process at completion of its predecessor's scan. Mounted in the module is a one-to-one graded-indexed micro lens array that focuses the image to be scanned onto the linear array pixels. The incident image is converted to an electrical signal and then the charge on each pixel is transferred to a common video line. The charge on each pixel is then converted to a voltage by a single video amplifier. The module output is then available on Pin 1 of the connector, Vout. Illumination is by means of an integrated LED light source. All components are housed in a small plastic housing which has a cover glass that acts as the focal point for the object being scanned. In addition, it protects the imaging array, micro lens assembly and LED light source from dust. Inputs and outputs (I/O's) to and from the module are by an 8-pin connector, located on one end of the module. A cross-section of the AMIS-710208-A7 module is shown in Figure 1 and a block diagram in Figure 2.
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AMIS-710208-A7: 200dpi CIS Module
Data Sheet
Figure 1: Cross Section
Figure 2: Block Diagram
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AMIS-710208-A7: 200dpi CIS Module
4.0 Input/Output Terminals
Data Sheet
Figure 3 shows location of the 8-pin connector, the control for adjusting the video gain and the contacts for the LED power supply. Note that the glass window is facing down.
Figure 3: Module Rear View
"GAIN ADJUST" is used to change the analog gain. This is used to set the average video output (Vpavg) to a particular level when different exposure levels are employed. Vpavg is factory set with a particular exposure level. Note that the exposure is the product of light power and time of exposure (integration time). Since the module's light power is a constant, then the total light exposure then depends on its integration time, which is the time between two Start Pulses (SP). The integration time is set at the factory usually according to the customer requirements; Vpavg is then adjusted to a particular level. From this level, if the integration time is decreased or increased, the specified Vpavg will increase or decrease proportionally. If it is necessary to restore the amplitude, within a limited range, it can be adjusted with the gain control. Vpavg is measured with the module's glass window facing down on a standard white uniform target similar to the standard white copy or typing paper. The module connector is an 8-pin 1mm surface mount flex cable, part number Molex 52207-0890. Table 1 lists the connector pin-out and their descriptions.
Table 1: Pin Configuration Pin Number Symbol 1 VOUT 2 Vdd 3 Vn 4 SP 5 GRD 6 CLOCK 7 GLED 8 VLED
Input/Output O I I I I I I I
Description Analog video output +5V power supply -5V power supply SP for the shift register Ground return for the module Main clock input to the module shift register Ground return for the LED light source +5V power supply for the LED light source
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AMIS-710208-A7: 200dpi CIS Module
5.0 Absolute Maximum Ratings
Table 2 lists the module's absolute maximum ratings.
Table 2: Maximum Ratings Parameter Power supply Symbols Vdd Idd Vn In VLED ILED Vih Vil Max. Rating 7 50 -10 30 5.5 400 Vdd - 0.5 -0.8 Units V mA V mA V mA V V
Data Sheet
Input clock pulse, high level Input clock pulse, low level
6.0 Recommended Operating Environment
Table 3 lists the module's recommended operating environment.
Table 3: Recommended Operating Environment Parameter Symbol Range Operating temperature Top 0 to 50 Operating humidity Hop 10 to 85 Storage temperature Tstg -25 to+75 Storage humidity Hstg 5 to 95
Units C % C %
7.0 Electro-Optical Characteristics
Table 4 lists the electro-optical characteristics at 25C
Table 4: Electro-Optical Characteristics at 25C Parameter Symbol Number of photo pixels Pixel-to-pixel spacing (1) Photo-response non-uniformity Up (2) Adjacent pixel non-uniformity Uadj (3) Dark non-uniformity Ud (4) Dark output voltage Vd (5) Modulation transfer function MTF
Notes: 1. 2. 3. 4. 5.
Parameter 704 125 <+/-30 <25 <100 20050
Units m % % mV mV %
Comments
Up = [(Vpmax-Vpavg) / Vpavg] x100% or [(Vpavg-Vpmin) / Vpavg] whichever is the largest. Where Vpmax is the maximum pixel value and Vpmin is the minimum pixel value in a single scan line. Upadj = MAX[|(Vp(n)-Vp(n+1))| / vp(n)]. Ud=Vdmax-Vdmin; where Vdmax is the maximum pixel value and Vdmin is the minimum pixel value in the dark. Vd is the average dark level. MTF=[(Vpmax-Vpmin) / (Vpmax+Vpmin)] x 100%. Depth of focus, DOF, is defined with the MTF. It is measured with the glass surface as the reference. Vpmax is the maximum output voltage at 100lp/inch, (At 1/2 of Nyquest Frequency). Vpmin is the minimum output voltage at 100lp/inch.
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AMIS-710208-A7: 200dpi CIS Module
8.0 Recommended Operating Conditions
Table 5 lists the recommended operating conditions at 25C
Table 5: Recommended Operating Conditions at 25C Parameter Symbol Min. Power supply Vdd 4.5 Vn -5.5 VLED 4.5 Idd 22 Ivn 4 ILED 100 Input voltage at digital high Vih Vdd -1.0 Input voltage at digital low Vil 0 Clock frequency Fclk Clock pulse high duty cycle 25 (1) Clock pulse high duration Clock 62.5 (1) (2) Integration time Tint 0.145 (2) Line scan rate Tint (3) Clock frequency Fclk (4) Bright output voltage Vpavg Operating temperature Top
Notes: 1. 2. 3. 4.
Data Sheet
Typ. 5.0 -5.0 5.0 25 5 150 Vdd - 0.5 4.0
Max. 5.5 -4.5 5.5 27 6 200 Vdd 0.8 5.0
176 4.0 1.65 +/-0.05 25
sec
50
Units V V V mA mA mA V V MHz % ns ms @ 4.0MHz clock frequency MHz Volts C
The minimum tint is specified with the maximum 5.0MHz clock frequency. Tint is the line scan rate or integration time. It is the time between two start pulses. Hence, the minimum integration time is fixed by the highest clock frequency. Here it is specified with a 4.0MHz clock frequency. Fclk is the main clock frequency, as is the pixel rate. Although the specification uses 4.0MHz, the module operates up to a maximum clock frequency of 5MHz. Vpavg = Vp(n) / 704; where Vp is the pixel amplitude in volts and where n is sequential pixel number in one line scan.
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AMIS-710208-A7: 200dpi CIS Module
Data Sheet
9.0 Timing Characteristics
The timing requirements are shown in Figure 4 and Table 6.
Figure 4: Timing Diagram
Table 6: Timing Requirements Parameters Clock cycle time Clock pulse width Clock duty cycle Prohibit crossing time of SP Data setup time Data hold time Reset level delay time Signal sampling time
Symbol to tw tprh tds tdh tdl tsh
Min. 62.5 25 15 20 20 50
Typ. 0.50
Max.
50
120
Units s ns % ns ns ns ns ns
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AMIS-710208-A7: 200dpi CIS Module
Data Sheet
10.0 Module Mechanical Dimensions
Figure 5 shows the mechanical dimensions of the module housing.
Figure 5: Mechanical Dimensions of the Module Housing
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AMIS-710208-A7: 200dpi CIS Module
Data Sheet
11.0 Company or Product Inquiries
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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