AI325 1/3 inch ccd image sensor for eia b/w camera 1 ver1.0 description the AI325 is a 250k pixels ccd area sensor for eia 1/3inch video cameras. buried photodiode and micro lens are adopted for low noise, low smear and high sensitivity. this chip also features a strong anti - blooming and electronic shutter with variable charge - storage time. structure feature - . micro lens for high sensitivity - . image - lag is negligible and excellent blooming suppression is performed. - . ttl level(5v) operation on hccd & rg electrodes. - . 16 pin plastic - dip. - . variable electronic shutter of 1/60 to 1/100,000 sec. - . high sensitivity and low smear. - . architecture : it - ccd - . optical size : 1/3 inch format - . chip size : 6.0(h) x 5.2(v) - . number of effective pixels : 510 (h) x 492 (v) about 250k pixels - . number of total pixels : 537 (h) x 505 (v) about 270k pixels - . pixel size : 9.65 (h) x 7.5 (v) - 2 - . optical black area horizontal direction : front 2 pixels rear 25 pix els vertical direction : front 12 pixels rear 1 p ixels - . number of dummy bits horizontal : 16 vertical : 1 ( even field only ) optical black position( top view ) pin configuration 16 pin plastic - dip ( top view ) 25 pin1 pin9 unit : pixels h 2 v 12 1 nc v rg v p v sub gnd v dd 16 15 14 13 12 11 10 9 h ? 2 1 2 3 4 5 6 7 8 gnd v gg v ss v out v ? 4 v ? 3 v ? 2 v ? 1 h ? 1 nc v rg v p v sub gnd v dd 16 15 14 13 12 11 10 9 h ? 2 1 2 3 4 5 6 7 8 gnd v gg v ss v out v ? 4 v ? 3 v ? 2 v ? 1 h ? 1 a1 pros 1 a1 pros
2 AI325 block diagram pin description description vertical register transfer clock 4 vertical register transfer clock 3 vertical register transfer clock 2 vertical register transfer clock 1 ground output amplifier gate bias output amplifier source bias ccd output signal ground substrate(overflow drain)bias protection bias reset gate clock no connection horizontal register transfer clock 1 horizontal register transfer clock 2 no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 symbol v ? 4 v ? 3 v ? 2 v ? 1 gnd v gg v ss v out gnd v sub v p v rg nc v dd h ? 1 h ? 2 output amplifier drain bias description no. symbol absolute maximum ratings v p v rg nc v gg v ss v out v dd gnd v sub hccd gnd vccd 8 7 v ? 1 h ? 1 h ? 2 6 5 4 3 2 1 9 10 11 12 13 14 15 16 v ? 2 v ? 3 v ? 4 pd - 10 to +20 - 0.3 to +27 - 55 to +10 v ? 1 , 2 , 3 , 4 - gnd v ? 1 , 2 , 3 , 4 - v p v ? 1 , 2 , 3 , 4 - v sub vertical clock input voltage - 0.3 to +55 - 0.3 to +18 - 55 to +10 v sub - gnd v dd , v out , v ss - gnd v dd , v out , v ss - v sub value unit symbol parameter substrate voltage supply voltage v v v v v v - 17 to +17 between horizontal clock and vertical clock input pins h ? 1 , h ? 2 - v ? 4 v output pin voltage ? rg, v gg - gnd ? rg, v gg - v sub - 10 to +15 - 55 to +10 v v protective circuit voltage vp - v sub - 65 to 0.3 v horizontal clock input voltage h ? 1 , h ? 2 - gnd - 10 to +15 v between vertical clock input pins v ? x - v ? y - 10 to +15 v storage temperature t stg - 30 to 80 ? operation temperature t opr - 10 to 60 ?
3 AI325 bias condition dc characteristics parameter symbol min. typ . max. unit output amplifier drain current i dd - 3 - ? driving condition parameter symbol min. typ . max. unit vertical clock high voltage ? v h1, v h3 14.5 15.0 15.5 v vertical clock middle voltage ? v m1, 2, 3, 4 - 0.2 0.0 0.2 vertical clock low voltage - 9.0 - 8.5 - 8.0 horizontal clock high voltage 4.5 5.0 5.5 horizontal clock low voltage - 0.5 0.0 0.5 rg clock voltage difference 4.7 5.0 5.3 substrate clock voltage 23 24 25 ? v l1, 2, 3, 4 ? h h1, 2 ? h l1, 2 ? rg hl ? v sub v v v v v v parameter symbol min. typ . max. unit output amplifier drain voltage v dd 14.5 15.0 15.5 v output amplifier gate voltage v gg 1.5 2.0 2.5 v output amplifier source voltage v ss ground through 680 ? resistor, ?? 5% substrate voltage adjustment range v sub 15 v fluctuation range after substrate voltage adjustment ?a v sub v protection bias v p set to low level of vertical transfer clock remark reset gate clock voltage adjustment range v rgl v fluctuation range after reset gate voltage adjustment ?a v rgl % 5 1 - 1 3 - 3 4 0
4 AI325 electro - optical performance item symbol min. typ . max. unit measurement method remark sensitivity sens 55 70 ? / lux 1 saturation signal v sat 800 ? 2 temp=60 ? smear s mr 0.015 % 3 blooming bl 1 % 4 video signal shading osnu 15 % 5 dark signal level v dark 2 ? 6 temp=60 ? dark signal shading dsnu 2 ? 7 temp=60 ?
5 AI325 1. sensitivity ? set to silc ( standard illumination conditions* ) measure the average value of signal output ( vout ) calculate the efficiency of vout to light intensity 2. vsat ? adjust light intensity to 200 times of silc measure the average value of signal output 3. smear ? adjust light intensity to 200 times of silc & readout clock measure the signal output at horizontal optical black ( vhopb ) measure the signal output at vertical blanking dummy ( vvbd ) smear = { ( vvbd - vhopb ) / vsat } ?? 100 ( % ) 4. blooming ? adjust light intensity to 200 times of silc & readout clock measure the signal output at horizontal optical black ( vhopb ) measure the signal output at blooming dummy area ( vbd ) blooming = { ( vbd - vhopb ) / vsat } ?? 100 ( % ) 5. osnu ? set to silc measure the average value of signal output ( vout ) measure the maximum value and the minimum value of signal output osnu = ( vmax - vmin ) / vout 100 (%) 6. vdark ? measure the average value of signal output at dark condition 7. dsnu ? measure the voltage difference between minimum and maximum of da rk signal * standard illumination conditions ? measure the average value of output of linear region at this time, measure the light intensity of illumination at ccd face plate define silc with above light source: tungsten lamp(3100k) ? use a standard test lens at f8 measurement method
6 AI325 notes on handling 1) static charge prevention ccd image sensors are easily damaged by static discharge. before handling be sure to take the following protective measures. a) either handle bare handed or use non - chargeable gloves, clothes or material. also use conductive shoes. b) when handling directly use an earth band. c) install a conductive mat on the floor or working table to pre vent the generation of static electricity. d) ionized air is recommended for discharge when handling ccd im age sensor. e) for the shipment of mounted substrates, use boxes treated for the prevention of static charges. 2) soldering a) make sure the package temperature does not exceed 80 ?? c. b) solder dipping in a mounting furnace causes damage to the gla ss and other defects. use a ground 30w soldering iron and solder each pin in less than 2 seconds. f or repairs and remount, cool sufficiently. c) to dismount an image sensor, do not use a solder suction equi pment. when using an electric desoldering tool, use a thermal controller of the zero cross on/off type and connect it to ground. 3) dust and dirt protection a) perform all assembly operations in a clean room (class 1000 o r less). b) do not either touch glass plates by hand or have any object c ome in contact with glass surfaces. should dirt stick to a glass surface, blow it off with an air bl ower. (for dirt stuck through static electricity ionized air is recommended.) c) clean with a cotton bud and ethyl alcohol if the grease stain ed. be careful not to scratch the glass. d) keep in a case to protect from dust and dirt. to prevent dew condensation, preheat or precool when moving to a room with great temperature differences. 4) others a) do not expose to strong light (sun rays) for long periods. b) exposure to high temperature or humidity will affect the char acteristics. accordingly avoid storage or usage in such conditions.
7 AI325 application circuit - 9 v 1 m rg h ? 1 h ? 2 +15 v 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 v ? 1 v gg v ss v out nc rg v p v sub gnd v dd AI325 180 k 0.1 10/6.3 v 27 k ccd output h ? 2 h ? 1 11 v sub v - driver ai1001s + 100 3.9 k kds226 vr 10k 3.3 k 0.1 c2223 v ? 2 v ? 3 v ? 4 680 v ? 1 v ? 2 v ? 3 v ? 4 33 33 33 12 15 14 10 100 gnd
8 AI325 package dimension (16 pin plastic - dip) unit = mm 0.32 ?? 0.10 12.20 ?? 0.1 8.9 ?? 0.10 3 ? 1.27 ?? 0.10 1.57 0.64 0.30 ?? 0.10 0.46 ?? 0.10 1.27 ?? 0.05 1.27 x7=8.89 ?? 0.10 11.80 ?? 0.05 3.55 ?? 0.25 5 ? 11.43 ?? 0.3 10.73 ?? 0.05 r0.3 3.08 ?? 0.3 1.40 ?? 0.3 9.70 ?? 0.10 11.40 ?? 0 .1 0.25 5 ? 1. the center of the effective image area relative to ? b ? and ? b ? ? is (h, v) = (6.1, 5.7) ?? 0.15mm. 2. the rotation angle of the effective image area relative to h and v is ?? 1.5 ? 2.5 r0.5 depth=0.4 r 0.3 6.1 5.7 b b h v : glass lid
|
