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AMIS-710324-A4: 300dpi CIS Module
Data Sheet
1.0 General Description
The AMIS-710324-A4 (PI324MC-A4) is a contact image sensor (CIS) module. It is a dual-analog-output contact image sensor, using MOS image sensor technology for high-speed performance and high sensitivity. The AMIS-710324-A4 is suitable for scanning A4 size (216mm) documents with 11.8 dots per millimeter (dpm) resolution. Applications include fax machines, game systems, a 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 11.8dpm resolution, 216mm total scanning length (2592 pixels long) Two independent analog outputs (split into two sections of 1248 pixels and 1344 pixels) Up to 270sec/line scanning speed with red light source Wide dynamic range Red LED light source Compact size 14mm x 19mm x 232mm Low power Light weight
3.0 Functional Description
The AMIS-710324-A4 imaging array consists of 27 sensors, AMIS-720321 (PI3021), produced by AMI Semiconductor. The sensor is a monolithic chip with an array of 96 photo sensing elements, of which 27 are cascaded to provide 2592 photo-detectors. Additionally, these chips give the users the readout flexibility in selecting their desired data format. These cascaded chips are segregated into two electrically independent sections of 13 chips and 14 chips, but they are still contiguously aligned in a single row, see Figure 1 (the module's block diagram). This configuration lends itself to a positional stream of video pixels, whether they are read in parallel or sequentially from the two output ports. Each chip contains a set of multiplex switches, and a digital shift register to control the chips sequential readout. Additionally, the chips contain a chip selection switch that is interrogated in a sequence as each predecessor chip completes its scanning process. Since this module has two output ports from two independently controlled sections of chips, the users are required to enter a set of control clocks and power into each section through the two provided connectors located on each end of the module.
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AMIS-710324-A4: 300dpi CIS Module
Data Sheet
Figure 1: AMIS-710324-A4 Module Block Diagram (See Table 1 for Pin Out Designation)
Figure 2 depicts a cross sectional pictorial of the module. Mounted in the module is a one-to-one graded indexed micro lens array that focuses the scanned documents' image onto the chip's sensing line. The sensing line is located along the module's sensor axis, known as the read line. These photon images are transformed into proportional video charges and processed by two on-board amplifiers. The video signal from the amplifier transmits a sequential stream of video pixels to the video output pin of the AMIS-710324-A4 module. Also mounted in the housing is a LED light source. Figure 2 shows the LED bar and its illumination path. The path traces the ray from the LED and is reflected from the document and focused through the ROD lens and onto the sensors. All these components are housed in a small plastic housing with a cover glass. The cover glass serves as a window with the outside surface as the focal point for the image on the document. It also serves to protect the imaging array, the micro lens assembly and the LED light source from dust.
Figure 2: AMIS-710324-A4 Cross Section
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AMIS-710324-A4: 300dpi CIS Module
4.0 I/O Designation
Data Sheet
There are two connectors located at the ends of the modules. The outline of the module in Figure 5 of the mechanical section illustrates these connector locations. With the module window facing down on a flat surface and with the viewer looking down on the backside of the module, the connectors are located on each end of the module with their pins pointing toward the viewer. The connectors for Section 1 have 12 pins and are located on the right-hand side. The part number is JAE IL-Z-12P-S125L3-E. Its pin numbers and designations are listed in Table 1.
Table 1: Pin Configuration for Section 1 Connector Pin Number Symbol 1 Vout1 2 Gnd 3 Vdd (+5V) 4 Vn (-5V ) 5 Gnd 6 SP1 7 Gnd 8 CP 9 GLED 10 VLED 11 LED (future) 12 LED (future)
Names and Functions Analog video output Ground; 0V Positive power supply Negative power supply Ground; 0V Shift register SP Ground; 0V Sampling clock pulse Ground for the light source; 0V Supply for the light source Supply for future LED source Supply for future LED source
The connector for Section 2 has eight pins and is located on the left-hand side. The part number is JAE IL-Z-8P-S125L3-E. The pin numbers and designations for the connector are listed in Table 2.
Table 2: Pin Configuration for Section 2 Connector Pin Number Symbol 1 Vout2 2 Gnd 3 Vdd (+5V) 4 Vn (-5V) 5 Gnd 6 SP2 7 Gnd 8 CP
Names and Functions Analog video output Ground; 0V Positive power supply Negative power supply Ground; 0V Shift register SP Ground; 0V Sampling clock pulse
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AMIS-710324-A4: 300dpi CIS Module
5.0 Absolute Maximum Rating
Table 3: Absolute Maximum Rating Parameter Power supply voltage
Data Sheet
Input clock pulse (high level) Input clock pulse (low level)
Symbols Vdd Idd Vn In VLED ILED Vih Vil
Maximum Rating 7 70 -15 20 6.0 0.65 Vdd +.5 -0.5
Units V mA V mA V A V V
Note: These are the absolute maximums and are not to be used in prolonged operation.
6.0 Operating Environment
Table 4: 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 +75 5 to 95
Units C % C %
7.0 Electro-Optical Characteristics at 25C
Table: Electro-Optical Characteristics at 25 C Parameter Total number of photo detectors Number of detectors in Section 1 Number of detectors in Section 2 Pixel-to-pixel spacing Line scanning rate (2) Clock frequency (3) Bright output voltage (4) Bright output non-uniformity (5) Adjacent pixel non-uniformity (6) Dark non-uniformity Dark output voltage
Notes: (1) (2) (3)
(6) (7)
Symbol
Tint f Vpavg Up Uadj Ud Vd MTF
(1)
Parameter 2592 1248 1344 84.7 270 5.0 1.0 <+/-30 <25 <100 <150 50
Units Elements Elements Elements m sec MHz V % % mV mV %
Note The sum of both sections
@ 5.0MHz clock frequency
Average dark level from the video reset level
Typical modulation transfer function
(4)
(5) (6) (7)
Tint: Line scanning rate or integration time. Tint is determined by the interval of two start pulses. The line scan time is determined by the longest array with both Section 1 and 2 operating in parallel. The longest array is Section 2, with 1344 pixels, running at a 5MHz pixel rate. f: main clock frequency Vpavg = Vp(n)/1248 for section 1 and Vpavg = Vp(n)/1344 for Section 2, where: Vp(n) is the peak value of any nth pixel in a give scan. This level is factory adjusted with an internal potentiometer after setting the scan times to the minimum allowable for a fixed clock frequency. In this case, 275sec at 5MHz clock frequency. This value is then used as a reference to adjust the dark level and to call out the dark uniformity (see Note 6 on dark uniformity). Up is defined as follows: Upmax = [(Vpmax - Vpavg) / Vpavg] x 100% or Upmin = [(Vpavg - Vpmin) / Vpavg] x 100% where: Vpmax=the maximum value of the peak nth video pixel, Vp(n), and: Vpmin = the minimum value of the peak video nth video pixel, Vp(n). Up = +/-30% is selected from the greater absolute value of Upmax of Upmin. If |Upmax| > |Upmin| then Up = +|Upmax| is selected, if |Upmin| > |Upmax| then Up = -|Upmin| is selected. In either case, |Upmax| + |Upmin| 60%. Upadj = MAX[ | (Vp(n) - Vp(n+l) | / Vp(n)] x 100% Upadj is the non-uniformity percentage pixel to pixel See Section 8.0 for discussion on dark uniformity, Ud. See Section 9.0 on MTF Discussion and Graph.
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AMIS-710324-A4: 300dpi CIS Module
8.0 Dark Uniformity, Ud
Data Sheet
Figure 3 exemplifies the definitions of the terminology, which are used to explain the video signal characteristics. Dark uniformity is defined as Ud = Vdmax - Vdmin; where Vdmax and Vdmin are the maximum and minimum voltage of Vd, the average dark level of total pixels in the scan line when the LED light is turned off. Vd is measured from the reset level and the amplitude between the dark level and this reset level is called pedestal. The pedestal level is caused by the resetting operation of the pixel. Although the pedestal remains constant for a constant clock frequency, the reset level will vary from ground because the dark level, Vd, is factory adjusted to ground (0V).
Figure 3: Definition of the Video Pixel in the Light and in the Dark
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AMIS-710324-A4: 300dpi CIS Module
9.0 MTF Graph and its Discussion
Data Sheet
Figure 4 depicts MTF versus Distance. This graph essentially shows the working depth of focus. Since this module is a 300dpi module, with a pixel density of 300 pixels per inch, the MTF was measured with a 150dpi or a 75 line-pair per inch optical bar pattern. The tests were conducted at a pixel rate of 2.5MHz.
TYPICAL MTF VERSUS DEPTH OF FOCUS
60 50
MTF in %
40 30 20 10 0 0 0.1 0.2 0.3 0.4 0.5 0.6 DEPTH FROM THE WINDOW SURFACE(mm)
Figure 4: MTF versus Distance
The effective algorithm used in the measurements is as described by the following equation: MTF={[Vp(n)+Vp(n+1)]/2-[Vp(n+2)+Vp(n+3)]/2}/{[Vp(n)+Vp(n+1)]/2+[Vp(n+2)+Vp(n+3)]/2} th th Where n is 1, 2, .....2592 , Vp(n) is the signal amplitude of the n pixel.
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AMIS-710324-A4: 300dpi CIS Module
10.0 Recommended Operating Conditions (25C)
Table 5: Recommended Operating Conditions (25 C) Item Symbol Power supply Vdd Vn. VLED Idd (1&2) Ivn (1&2) ILED Input voltage at digital high Vih Input voltage at digital low Vil Clock frequency f Clock pulse high duty cycle Clock pulse high duration Integration time Tint(1) Operating temperature Top
Data Sheet
Min. 4.5 -4.5
Vdd-1.0 0 25 50 0.270
Mean 5.0 -5 5.0 35 6.0 460 Vdd-.5
Max. 5.5 -12 5.5 55 10.0 600 Vdd 0.8 5.5
25
5.0 50
Units V V V ma ma ma V V MHz % ns ms C
11.0 Switching Characteristics (25C)
The timing diagram for both arrays Section 1 and Section 2, are shown in Figure 5.
Figure 5: Timing Diagram for both Section 1 and Section 2
The switching characteristics for the I/O clocks are labeled symbolic acronyms for each corresponding clock's switching edges. The corresponding times for these symbols are given in Table 6.
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AMIS-710324-A4: 300dpi CIS Module
Table 6: Symbol Definitions for the 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. 0.20 50 25 15 20 20 50 120 Typ. Max. 4.0 75 Units s ns % ns ns ns ns ns
Data Sheet
12.0 AMIS-710324-A4 Module and its Mechanical Dimensions
Figure 6 is an overview drawing of the module. If a detailed drawing is desired, especially for a design in application, a full size drawing is available upon request.
Figure 6: Mechanical Overview of the Module
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AMIS-710324-A4: 300dpi CIS Module
13.0 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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