3 ccd peripheral ics description the lr36685 is a cmos vertical clock driver and shutter driver ic for ccd area sensors which provides the functions to convert the voltage and impedance from the cmos level. features ? built-in seven circuits C 2-level output : 2 circuits for vertical ccd clock driver output voltage level (typ.) = C9 to 0 v C 3-level output : 4 circuits for vertical ccd clock driver output voltage level (typ.) = C9 to 0 to +15 v C 2-level output : 1 circuit for shutter driver output voltage level (typ.) = C9 to +17 v ? switchable between ntsc (eia) and pal (ccir) modes ? package : 24-pin ssop (p-ssop024-0275) pin connections lr36685 1 lr36685 vertical driver ic for ccd area sensors pofd vh 1bx 1 24 23 22 21 20 19 18 17 16 15 14 13 v mb v 4x 2 v l vh 3ax 3 v 2 gnd 4 v 4 v dd 5 nc v 3x 6 v 3b vh 1ax 7 v 3a v 1x 8 v 1b v 2x 9 v 1a ofdx 10 v ma vh 3bx 11 v h v ofdh 12 24-pin ssop top view (p-ssop024-0275) in the absence of confirmation by device specification sheets, sharp takes no responsibility for any defects that may occur in equipment using any sharp devices shown in catalogs, data books, etc. contact sharp in order to obtain the latest device specification sheets before using any sharp devic e. back
lr36685 2 block diagram v ofdh vh 3bx ofdx v 2x v 1x vh 1ax v 3x v dd gnd vh 3ax v 4x vh 1bx pofd v mb v l v 2 v 4 nc v 3b v 3a v 1b v 1a v ma v h mix mix mix mix 24 23 22 21 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 9 10 11 12
lr36685 3 pin description 16 gnd ground a grounding pin. pin no. symbol pin name description 1 pofd ofd pulse output an electronic shutter pulse output. (high level = v ofdh , low level = v l ) 2v mb power supply a power supply for high level of v 2 and v 4 . 3v l power supply a power supply for low level of all output pulses. 4v 2 vertical transfer pulse output 2 a pulse to drive vertical ccd shift register. connect to ? v2 . 5v 4 vertical transfer pulse output 4 a pulse to drive vertical ccd shift register. connect to ? v4 . 6 nc no connection no connection a pulse to drive vertical ccd shift register. connect to ? v3b . vertical transfer pulse output 3b v 3b 7 9v 1b vertical transfer pulse output 1b a pulse to drive vertical ccd shift register. connect to ? v1b . 8v 3a vertical transfer pulse output 3a a pulse to drive vertical ccd shift register. connect to ? v3a . a pulse to drive vertical ccd shift register. connect to ? v1a . vertical transfer pulse output 1a v 1a 10 11 v ma power supply a power supply for intermediate level of v 1a , v 1b , v 3a and v 3b . a power supply for high level of v 1a , v 1b , v 3a and v 3b . power supply v h 12 13 vh 1bx readout pulse input 1b a pulse that transfers the charge of the photo-diode to the vertical shift register. a vertical transfer pulse input. vertical transfer pulse input 4 v 4x 14 15 vh 3ax readout pulse input 3a a pulse that transfers the charge of the photo-diode to the vertical shift register. a vertical transfer pulse input. vertical transfer pulse input 3 v 3x 18 a power supply for input pulses. power supply v dd 17 19 vh 1ax readout pulse input 1a a pulse that transfers the charge of the photo-diode to the vertical shift register. a vertical transfer pulse input. vertical transfer pulse input 1 v 1x 20 22 ofdx ofd pulse input an electronic shutter pulse input. 21 v 2x vertical transfer pulse input 2 a vertical transfer pulse input. a pulse that transfers the charge of the photo-diode to the vertical shift register. readout pulse input 3b vh 3bx 23 24 v ofdh power supply a power supply for high level of pofd.
lr36685 4 absolute maximum ratings recommended operating conditions parameter symbol rating unit supply voltage v dd gnd C 0.3 to gnd + 6.0 v v h C v l 29.0 v v ma , v mb v l to v h v v ofdh C v l 34.0 v input voltage v in gnd C 0.3 to v dd + 0.3 v storage temperature t stg C55 to +150 ?c 1 note note : 1. v h (min.) = v dd , v ofdh (min.) = v dd , v l (max.) = gnd parameter symbol min. typ. supply voltage v dd 3.0 3.3 v h C v l 17.0 24.0 v h 12.0 15.0 v l C10.0 C9.0 v ma , v mb 0.0 v ofdh C v l 17.0 26.0 v v v v v v unit 32.0 C5.0 20.0 27.0 5.5 max. +70 ?c C20 t opr operating temperature khz 15.625 pal khz 15.734 ntsc operating frequency 0.25v dd v 0 v in (low) input voltage 24.0 v 17.0 12.0 v ofdh v in (high) 0.8v dd v v dd + 0.2
lr36685 5 electrical characteristics dc characteristics (v dd = +3.3 v, v h = +15.0 v, v l = C9.0 v, v ma = v mb = 0 v, v ofdh = +17.0 v, t a = +25?c) input "low" voltage v il input "high" voltage v ih input "low" current |i il | |i ih | output "low" voltage v ol output "high" voltage v oh output "intermediate" voltage v omla v omha v omlb v omhb output "low" current |i ol | output "high" current |i oh | output "high" current |i ofdh | output "intermediate" current |i omla | |i omha | |i omlb | |i omhb | r onh r onofh r onm r onl |i dd | parameter symbol conditions input "high" current v ofdh output "high" voltage min. 0.8v dd 0.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 C0.1 C0.1 C0.1 C0.1 16.9 14.9 20 25 20 typ. 30 max. 1.0 200 v dd + 0.2 0.25v dd 0.1 0.1 0.1 0.1 C8.9 2.0 i ol < 1 a v ih = 3.3 v v il = 0 v i ofdh = 20 ma i oh = 20 ma v omhb = v m + 0.1 v v omlb = v m C 0.1 v v omha = v m + 0.1 v v omla = v m C 0.1 v v ofdh = v ofdh C 0.1 v v oh = v h C 0.1 v v ol = v l + 0.1 v i omhb < 1 a i omlb < 1 a i omha < 1 a i omla < 1 a i ofdh < 1 a i oh < 1 a i ol = 20 ma i om = 20 ma $ $ ma v v v v v v v ma ma ma ma ma ma v v a a $ unit $3 note 3 1, 2, 3 1 2 1, 2, 3 1, 2, 3 a a 200 200 |i l | |i m | a a 200 200 |i ofdh | |i h | 2 3 static current output on resistance ma 2 2 1 2 1, 2 notes : 1. applied to outputs (v 2 , v 4 ). 2. applied to outputs (v 1a , v 1b , v 3a , v 3b ). 3. applied to output (pofd).
lr36685 6 ac characteristics (v dd = +3.3 v, v h = +15.0 v, v l = C9.0 v, v ma = v mb = 0 v, v ofdh = +17.0 v, t a = +25?c, shutter speed : 1/100 000 s) parameter symbol conditions typ. sequential delay t trm (v l / v m ) v in to v m C 1.0 v (v 1a , v 1b , v 2 , v 3a , v 3b , v 4 ) 600 ns unit 1 200 max. dynamic current t tfofdl (v ofdh / v l ) t trofdh (v l / v ofdh ) t tfm (v h / v m ) t trh (v m / v h ) t tfl (v m / v l ) 160 ns 80 v in to v l + 1.0 v (pofd) 160 ns 80 v in to v ofdh C 1.0 v (pofd) 1 600 ns 800 v in to v m + 1.0 v (v 1a , v 1b , v 3a , v 3b ) 1 600 ns 800 v in to v h C 1.0 v (v 1a , v 1b , v 3a , v 3b ) 1 200 ns 600 v in to v l + 1.0 v (v 1a , v 1b , v 2 , v 3a , v 3b , v 4 ) during operation 5 ma 10 i dyn note : refer to " switching characteristics conditions " and " equivalent circuit ".
lr36685 7 switching characteristics conditions equivalent circuit (while v 1a and v 3a [or v 1b and v 3b ] are measured, v 1b and v 3b [or v 1a and v 3a ] are open.) t trh t tfm t tfl t trm v m C 1.0 v h C 1.0 v m + 1.0 v l + 1.0 v l + 1.0 t trofdh t tfofdl v dd (3.3 v) gnd (0.0 v) v dd (3.3 v) v 1x , v 2x v 3x , v 4x vh 1ax , vh 1bx vh 3ax , vh 3bx v 1a , v 1b v 3a , v 3b v 2 , v 4 ofdx pofd gnd (0.0 v) v h (15.0 v) v ma (0.0 v) v l (C9.0 v) v mb (0.0 v) v l (C9.0 v) v dd (3.3 v) gnd (0.0 v) v ofdh (17.0 v) v l (C9.0 v) v ofdh C 1.0 c 41 c 23 c 12 c 1 c 2 c 3 c 4 c 34 r 1 r 2 r 4 r 3 v 1a (or v 1b ) v 2 v 4 v 3a (or v 3b ) pofd csub csub = 500 pf rg r 1 to r 4 = 51 $ rg = 10 $ c 1 to c 4 = 3 300 pf c 12 , c 23 , c 34 , c 41 = 1 000 pf
lr36685 8 1.05 0.1 0.1 0.1 0.45 0.45 6.0 0.2 7.6 0.4 7.8 0.2 p-0.65 typ. 24-0.27 0.1 0.15 0.05 12 13 1 24 1.27 max. 0.15 0.15 see detail a 0.15 m 0-10? 0.45 0.55 0.15 0.8 0.15 1.05 0.1 seating plane package base plane detail a 0.1 0.1 0.25 24 ssop (p-ssop024-0275) (unit : mm) package outlines
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