Color Contact Image Sensor Heads for High-speed Scanner LSH1208-BA50A Contact Image Sensor Heads 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-φ1.5×2 Oval Hole D4MIN 216 (Effective Reading Width) Effective 1st bit 9.4 0.324±0.1 17.5 14 ±0.2 Scanning Line 2-φ1.5 D4MIN 15 2- 3 +0/-0.1 2.0±0.8 MAX.3.15 6.9 1mm Pitch 15pin max.1 max.1 max.1 max.1 6.9 No.15 No.1 Center of FCC 13.8 Characteristics Parameter Symbol Typ. Unit Effective scanning width − 216 mm Primary scan dot density − 1200 dpi Total dot number − 10368 dots Power supply voltage VDD 3.3 V Reference voltage VREF 0.8 V Scanning speed SLT 1.0 x 3 ms / line CLK 4 MHz Maximum dynamic range VRMax 0.5 V Minimum dynamic range VRMin. 0.25 V Vod VREF + − 0.1 V − 5 to 45 °C Clock frequency Dark output Operating temperature www.rohm.com c 2011 ROHM Co., Ltd. All rights reserved. ○ 1/5 2011.03 - Rev.B LSH1208-BA50A Data Sheet Pin assignments No. Circuit I/O Function 1 AO3 O Analog output 2 GND I Ground 3 AO2 O Analog output 4 GND I Ground 5 AO1 O Analog output 6 MODE I Mode select 7 GND I Ground 8 VDD I Power supply 9 VREF I Reference voltage 10 SP I Start pulse 11 CLK I Clock 12 V-LED I LED power supply 13 B-GND I BLUE LED ground 14 G-GND I GREEN LED ground 15 R-GND I RED LED ground Timing chart (a) CLK Timing Chart 1/fCLK twH twL CLK 50% 50% SP tSETUP tHOLD ts Ao 1pixel www.rohm.com c 2011 ROHM Co., Ltd. All rights reserved. ○ 2/5 2pixel 2011.03 - Rev.B LSH1208-BA50A Data Sheet (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 1 2 82 CLK SP A O1 to 3 VREF output period A O1 : A O2 : A O3 : 1 to 82clock 1 to 82clock 1 to 82clock Vdummy Analog output period 1 to 100pixels − − 101 to 3456pixels 3457 to 6912pixels 6913 to 10312pixels Vdummy − − 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 A O1 to 3 VREF output period A O1 : A O2 : A O3 : 1 to 82clock 1 to 82clock 1 to 82clock Vdummy Analog output period Vdummy 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. www.rohm.com c 2011 ROHM Co., Ltd. All rights reserved. ○ 3/5 2011.03 - Rev.B LSH1208-BA50A Data Sheet (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 1 2 82 CLK SP A O1 to 3 VREF output period 1 to 82clock 1 to 82clock 1 to 82clock A O1 : A O2 : A O3 : Vdummy Analog output period Vdummy 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 1μF×6 GND 1 10368 VDD SP VREF ANALOG MEMORY CIRCUIT CLK MODE 1 3456 3457 6912 6913 10368 AO1 AO2 AO3 MODE VREF VLED RGND GGND BGND www.rohm.com c 2011 ROHM Co., Ltd. All rights reserved. ○ 4/5 2011.03 - Rev.B LSH1208-BA50A Data Sheet Peripheral circuit SENSOR UNIT 13 14 15 12 1 3 5 9 8 10 11 R3 2, 4, 7 6 GND MODE C5 R3 R1 R2 B G R R3 C1 A 3 C3 A 2 A 1 SP VDD CLK C2 LED GND C4 VREF VLED R1=R2=100Ω, R3=100KΩ C1=C2=47μF C3=100μF, C4=0.1μF, C5=100pF www.rohm.com c 2011 ROHM Co., Ltd. All rights reserved. ○ 5/5 2011.03 - Rev.B Notice Notes Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. R1120A