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Color Multi Line Sensor Heads for High-speed Scanner
LSH1208-BA50A
Multi Line Sensor Head with 3 times higher scanning speed due to 3ch outputs. Newly developed resolution change-over IC is employed which has improved noise resistance. Applications High speed reading equipment (i.e. document scanners, wide format scanners). Features 1) High speed reading capability due to 3 analog output. 2) Signal amplifier is built into the sensor IC in order to increase immunity to external noise. 3) ROHM's newly developed sensor IC reduces failures due to ESD (based on the IEC61000-4-2 standard). 4) With the proprietary prism, the output signal is maintained uniformly. 5) The ceramic substrate is used for excellent dimensional accuracy and thermal stability. Dimensions (Unit : mm)
236 0.5 2-1.5x2 Oval Hole D4MIN Scanning Line 216 (Effective Reading Width) Effective 1st bit 9.4 0.3240.1
14 0.2
2-1.5 D4MIN
15 2.00.8 2- 3 +0/-0.1 MAX.3.15
1mm Pitch 15pin
6.9
6.9
max.1
max.1
max.1
max.1
No.1 Center of FCC 13.8
No.15
Characteristics
Parameter Effective scanning width Primary scan dot density Total dot number Power supply voltage Reference voltage Scanning speed Clock frequency Maximum dynamic range Minimum dynamic range Dark output Operating temperature Symbol - - - VDD VREF SLT CLK VRMax VRMin. Vod - Typ. 216 1200 10368 3.3 0.8 1.0 x 3 4 0.5 0.25 VREF + 0.1 - 5 to 45 Unit mm dpi dots V V ms / line MHz V V V C
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c 2009 ROHM Co., Ltd. All rights reserved.
17.5
1/5
2009.11 - Rev.A
LSH1208-BA50A
Pin assignments
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Circuit AO3 GND AO2 GND AO1 MODE GND VDD VREF SP CLK V-LED B-GND G-GND R-GND I/O O I O I O I I I I I I I I I I Function
Data Sheet
Analog output Ground Analog output Ground Analog output Mode select Ground Power supply
Reference voltage Start pulse Clock LED power supply BLUE LED ground GREEN LED ground RED LED ground
Timing chart (a) CLK Timing Chart
1/fCLK twH twL
CLK
50%
50%
SP
tSETUP tHOLD ts
Ao
1pixel 2pixel
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c 2009 ROHM Co., Ltd. All rights reserved.
2/5
2009.11 - Rev.A
LSH1208-BA50A
(b-1) Data Output Timing Chart (1200dpi mode) After turning on the SP pulse, the analog output starts from the setting up point of 82 clock pulse.
1200dpi mode
Data Sheet
1
2
82
CLK SP AO1 to 3
VREF output period
Vdummy
Analog output period
Vdummy
AO1 : AO2 : AO3 :
1 to 82clock 1 to 82clock 1 to 82clock
1 to 100pixels - -
101 to 3456pixels 3457 to 6912pixels 6913 to 10312pixels
- - 10313 to 10368pixels
Note)The CLK section area which is over the effective pixel numbers (Output blank part) cannot be used as the analog Output standard level.
(b-2) Data Output Timing Chart (600dpi mode) After turning on the SP pulse, the analog output starts from the setting up point of 82 clock pulse. 600dpi mode
1
2
82
CLK SP AO1 to 3
VREF output period
Vdummy
Analog output period
Vdummy
AO1 : AO2 : AO3 :
1 to 82clock 1 to 82clock 1 to 82clock
1 to 50pixels - -
51 to 1728pixels 1729 to 3456pixels 3457 to 5156pixels
- - 5157 to 5184pixels
Note)The CLK section area which is over the effective pixel numbers (Output blank part) cannot be used as the analog Output standard level.
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c 2009 ROHM Co., Ltd. All rights reserved.
3/5
2009.11 - Rev.A
LSH1208-BA50A
(b-3) Data Output Timing Chart (300dpi mode) After turning on the SP pulse, the analog output starts from the setting up point of 82 clock pulse. 300dpi mode
Data Sheet
1
2
82
CLK SP AO1 to 3
VREF output period
Vdummy
Analog output period
Vdummy
AO1 : AO2 : AO3 :
1 to 82clock 1 to 82clock 1 to 82clock
1 to 25pixels - -
26 to 864pixels 865 to 1728pixels 1729 to 2578pixels
- - 2579 to 2592pixels
Note)The CLK section area which is over the effective pixel numbers (Output blank part) cannot be used as the analog Output standard level.
Circuit diagram
VDD
1Fx6
GND
1
10368
SP
VDD
ANALOG MEMORY CIRCUIT
CLK
VREF MODE
1 AO1 AO2 AO3 MODE VREF VLED
3456
3457
6912
6913
10368
RGND GGND BGND
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c 2009 ROHM Co., Ltd. All rights reserved.
4/5
2009.11 - Rev.A
LSH1208-BA50A
Peripheral circuit
Data Sheet
SENSOR UNIT
13 14 15 12 1 3 5 9 8 10 11 2, 4, 7 6
R3 R3 R2 B G R R3 C1 C3 A3 A2 A1 VDD C2 SP CLK
C5
R1
LED GND
C4
VLED
VREF
GND
MODE
R1=R2=100, R3=100K C1=C2=47F C3=100F, C4=0.1F, C5=100pF
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c 2009 ROHM Co., Ltd. All rights reserved.
5/5
2009.11 - Rev.A
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel-controller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law.
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