1.0 General Description
The AMIS-710414-A4 (PI414MC-A4-R) is a contact image sensor (CIS) module, which uses MOS image sensor technology for high-speed performance and high sensitivity. The AMIS-710414-A4 is suitable for scanning A4 size (216mm) documents with 15.8 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
? 15.8dpm resolution, 216mm scanning length
? Dual LED light source, RED and IR, with a line scan time to 180μsec @ 5MHz
? Wide dynamic range
? Analog output
? Compact size ? 14.0mm x 19.5mm x 232mm
? Low power
? Light weight
3.0 Functional Description
The AMIS-710414-A4 imaging array consists of 27 AMIS-720642 (PI3042) sensors, produced by AMI Semiconductor, which are cascaded to provide 3456 photo-detectors with their associated multiplex switches and a digital shift register, which controls its sequential readout. Mounted in the module is a one-to-one graded indexed micro lens array, which focuses on the image of the scanned documents then transfers it onto the sensors. The on-board amplifier processes the video signal to produce a sequential stream of video at the output pin of the AMIS-710414-A4 module. These 27 sensors bonded on a printed circuit board (PCB) are grouped into four sub-cascaded sections. Each contiguously cascaded chip section is connected on separate video lines, accordingly providing four video outputs, VOUT1, VOUT2, VOUT3, and VOUT4. Before the signal charges from the four video lines appear at their respective outputs, they are converted to signal voltages by four on-board buffer amplifiers; one for each of its corresponding video sections. The first three sections, VOUT1, VOUT2 and VOUT3 have seven sensor chips, while the VOUT4 has six sensor chips. Since each sensor chip has 128 pixels, there are a total of 3456 pixels (see Figure 1).
Illumination is accomplished by means of integrated LED sources; Red (65nm) and IR (880nm). 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) to and from the module are facilitated by a 12-pin connector, EBW-PK23-P012L2-3Z, located on one end of the module. For the location of Pin 1, see Figure 4.
The cross section of the AMIS-710414-A4 module is shown in Figure 1 and a block diagram in Figure 2.
4.0 Connector Pin Out Designation
The part number for the connector is EBW-PK23-P012L2-3Z.
Table 1: Pin-out Configuration
Pin Number Symbol Names and Functions
1 VOUT1 Analog video output 1
2 VOUT2 Analog video output 2
0V
3 GND
Ground;
4 VOUT 3 Analog video output 3
5 VOUT 4 Analog video output 4
6 Vdd (+5V) Positive power supply
7 SP (START) Shift register start pulse
8 GLED IR Ground for IR light source; 0V
9 CP (CLOCK) Sampling clock pulse
10 Vn (-5V to -12V) Negative power supply
11 GLED RED Ground for the RED light source; 0V
12 VLED Supply for the light source
5.0 Maximum Ratings
Table 2: Maximum Rating
Parameter Symbols Maximum Rating Units
Vdd 7 V
Power supply voltage
mA
Idd 100
Vn -15 V
In 35
mA
VLED IR 5.5 V
VLED RED 5.5 V
ILED IR 650 mA
ILED RED 500 mA
Input clock pulse (high level) Vih Vdd V
Input clock pulse (low level) Vil -0.5 V
Note: These are the maximum ratings and are not to be used in a prolonged condition.
6.0 Operating Environment
Table 3: Operating Environment
Parameter Symbol Range Units
Operating temperature Top 0 to +50 °C
Operating humidity Hop +10 to +85 %
Storage temperature Tstg -25 to +75 °C
Storage humidity Hstg +5 to +95 %
7.0 Electro-Optical Characteristics
The tabled values are measured at 25°C.
Table 4: Electro-Optical Characteristics
Parameter Symbol Typ. Units Note
Total number of photo detectors 3456 Elements
896 Elements
Section 1, 2 & 3 number of photo
detectors
Section 4 number of detectors 768 Elements
Pixel-to-pixel spacing 63.5 μm
Line scanning rate (1)Tint180 μsec @ 5.0MHz clock frequency
Clock frequency (2)fclk 5.0 MHz
+/-0.15 V
Bright output voltage (3)Vpavg 1.1
Bright output non-uniformity (4)Up +/-30 %
Adjacent pixel non-uniformity (5)Uadj <25 %
Dark non-uniformity (6)Ud <150 mV
Dark output voltage (6)Vd <600
mV
Modulation transfer function (7)MTF >40 % MTF for Red LED
Modulation transfer function (7)MTF >30 % MTF for IR LED
Notes:
(1) Tint is the line scanning rate or integration time. Tint is determined by the interval of two start pulses (SP). The integration time of 180μsec is set at the factory. For
additional comments, see Note 1 under Table 5.
(2) fclk: main clock frequency
(3) Vpavg = ∑ Vp(n)/3456
(4) Up = [(Vpmax - Vpavg) / Vpavg] x 100% or [(Vpavg - Vpmin) / Vpavg] x 100%, where Vpmax = maximum pixel amplitude in the line scan and Vpmin = minimum
pixel amplitude in the line scan.
(5) Upadj = MAX[ | (Vp(n) - Vp(n+l) | / Vp(n)) x 100%
Upadj is the non-uniformity in percent between adjacent pixels, where Vp(n) is the n th pixel in the line scan.
(6) Ud = Vdmax – Vdmin
Vd = the average dark output level
Vdmin is the minimum output on a black document (LED is turned off).
Vdmax: is the maximum output voltage on a black document (LED is turned off).
(7) MTF = [(Vmax - Vmin) / (Vmax + Vmin)] x 100 [%]
Vmax: is the maximum output voltage at 100lp/in (200dpi target) and Vmin: is the minimum output voltage at 100lp/in (200dpi target), where lp / in is the line pairs per inch.
8.0 Recommended Operating Conditions
The tabled values are measured at 25°C.
Table 5: Recommended Operating Conditions
Item Symbol Min. Mean Max. Units
Power supply
Vdd 4.5 5.0 5.5 V
Vn. -13 -5.0 -4.0
VLED IR 5 5.5 V
VLED Red 5 5.5 V
ILED IR 500 650 ma
ILED Red 350 500 ma
Idd 90 95 ma
Ivn 4.0 5.0 5.5 ma
Input voltage at digital high Vih Vdd-1.0 Vdd-0.5 Vdd V
Input voltage at digital low Vil 0.6 V
Clock frequency Fclk 5.0 5.5MHz
Clock pulse high duty cycle 25 %
Clock pulse high duration 50 ns
Integration time Tint 180 μs Operating temperature Top 25 50 °C
9.0 Switching Characteristics (25°C)
The switching characteristics (at 25°C) for the I/O clocks are shown in Figure 4. For the timing symbol definitions, see Table 6.
VOUT4. Section 4 has only six sensor chips, hence its active scan is shorter by 128 pixels.
Table 6: Timing Symbol Definitions for Figure 3 Timing Diagram
Parameters Symbol Min. Typ. Max. Units
Clock cycle time to 0.20 4.0
μs
Clock pulse width tw 50 ns
Clock duty cycle 25 75 %
Prohibit crossing time of SP tprh 0 ns
Data setup time tds 20 ns
Data hold time tdh 0 ns
Signal delay time tdl 20 ns
Signal settling time tsh 100 ns
Note:
(1) "Prohibit crossing of start pulse" is to indicate that the start pulse should not be active high between any two consecutive high going clock pulse or two consecutive
low going clock pulses (see Figure 3). Only one high going clock under the active high start pulse initiates the internal shift register and it must not be active over two high going clocks. All low going clock pulses will not initiate the shift register. To ensure that the start pulse will not be actively high during two consecutive high going clocks, the circuit should be designed to keep the start pulse active only for one high going clock cycle.
10.0 AMIS-710414-A4 Module Mechanical Dimensions This is an overview drawing of the module.
11.0 Company or Product Inquiries
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