1/5 www.rohm.com c 2011 rohm co., ltd. all rights reserved. 2011.03 - rev.b color contact image sensor heads for high-speed scanner LSH1208-BA50A contact image sensor heads with 3 time s higher scanning speed due to 3ch outputs. newly developed resolution change-over ic is em ployed which has improved noise resistance. ? applications high speed reading equipment (i.e. docum ent 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 imm unity to external noise. 3) rohm?s newly developed sensor ic reduces fa ilures 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) no.1 no.15 0.324 0.1 15 max.1 max.1 max.1 max.1 9.4 17.5 max.3.15 13.8 center of fcc 15pin pitch 1mm 6.9 0.2 14 scanning line oval hole d4min 2- 1.5 2 2- 1.5 d4min 6.9 0.5 236 (effective reading width) 216 2- 3 +0/-0.1 2.0 0.8 effective 1st bit ? characteristics parameter v dd ? ? ? ? slt clk vrmax vrmin. 216 1200 10368 3.3 1.0 x 3 4 0.5 0.25 0.8 v ref 0.1 5 to 45 mm dpi dots v v v ms / line mhz v v symbol typ. unit vod v ref c reference voltage effective scanning width primary scan dot density total dot number power supply voltage scanning speed clock frequency maximum dynamic range minimum dynamic range dark output operating temperature + ?
2/5 www.rohm.com c 2011 rohm co., ltd. all rights reserved. 2011.03 - rev.b data sheet LSH1208-BA50A ? pin assignments reference voltage mode select analog output analog output analog output ground ground ground start pulse led power supply power supply blue led ground green led groun d red led ground clock no. circuit i / o function 1 2 3 4 5 6 7 8 9 10 11 12 a o3 mode gnd v dd v ref sp clk v-led b-gnd g-gnd r-gnd o a o2 o a o1 o i i gnd i gnd i i i i i i i i i 13 14 15 ? timing chart (a) clk timing chart ts thold tsetup twh 1/fclk c lk twl s p a o 1pixel 2pixel 50% 50%
3/5 www.rohm.com c 2011 rohm co., ltd. all rights reserved. 2011.03 - rev.b data sheet LSH1208-BA50A (b-1) data output timing chart (1200dpi mode) after turning on the sp pulse, the analog output star ts from the setting up point of 82 clock pulse. note)the clk section area which is over the effective pixel numbers (output blank part) cannot be used as the analog output standard level. c lk 1 s p a o1 to 3 a o1 : 282 v ref output period vdummy vdummy analog output period 1 to 82clock 1 to 100pixels 101 to 3456pixels ? a o2 : 1 to 82clock ? 3457 to 6912pixels ? a o3 : 1 to 82clock ? 6913 to 10312pixels 10313 to 10368pixe ls 1200dpi mode (b-2) data output timing chart (600dpi mode) after turning on the sp pulse, the analog output star ts from the setting up point of 82 clock pulse. note)the clk section area which is over the effective pixel numbers (output blank part) cannot be used as the analog output standard level. c lk 1 s p a o1 to 3 a o1 : 282 v ref output period vdummy vdummy analog output period 1 to 82clock a o2 : 1 to 82clock a o3 : 1 to 82clock 600dpi mode 1 to 50pixels 51 to 1728pixels ? ? 1729 to 3456pixels ? ? 3457 to 5156pixels 5157 to 5184pixe ls
4/5 www.rohm.com c 2011 rohm co., ltd. all rights reserved. 2011.03 - rev.b data sheet LSH1208-BA50A (b-3) data output timing chart (300dpi mode) after turning on the sp pulse, the analog output star ts from the setting up point of 82 clock pulse. note)the clk section area which is over the effective pixel numbers (output blank part) cannot be used as the analog output standard level. c lk 1 s p a o1 to 3 a o1 : 282 v ref output period vdummy vdummy analog output period 1 to 82clock 1 to 25pixels 26 to 864pixels ? a o2 : 1 to 82clock ? 865 to 1728pixels ? a o3 : 1 to 82clock ? 1729 to 2578pixels 2579 to 2592pixe ls 300dpi mode ? circuit diagram v dd v dd g nd s p c lk 1 3456 3457 6912 6913 10368 10368 1 a o1 a o2 a o3 v led v ref v ref m ode mode r gnd g gnd b gnd 1 f 6 analog memory circuit
5/5 www.rohm.com c 2011 rohm co., ltd. all rights reserved. 2011.03 - rev.b data sheet LSH1208-BA50A ? peripheral circuit sensor unit v ref a 1 v dd mode gnd clk sp c2 r2 r1 r3 r g c3 c4 led gnd v led b 15 12 1 3 5 9 8 10 11 2, 4, 7 6 14 13 c1 c5 r3 r3 a 2 a 3 r1 = r2 = 100 , r3 = 100k c1 = c2 = 47 f c3 = 100 f, c4 = 0.1 f, c5 = 100pf
r 1 120 a ww w .rohm.com ? 20 1 1 rohm co., ltd. all rights reserved. notice rohm customer support system http://ww w . r ohm.com/contact/ thank you for your accessing to rohm p r oduct informations. mo r e detail p r oduct informations and catalogs a r e available, please contact us. notes
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