unisonic technologies co., ltd ut8803 cmos ic www.unisonic.com.tw 1 of 6 copyright ? 2009 unisonic technologies co., ltd qw-r502-094,b pir infrared remote control circuit ? description the utc ut8803 is an integrated circuit that design for infrared pir controlling. it needs only few ex ternal components in application circuit. it can be applied as controller of light, electric switching and burglar alarm, and so on. ? features * high noise immunity. * output drivable relay or triac. * contain two op amps, gain adjustable. * control time adjustable. * steady voltage inside output 3.1 v to drive the pir directly. * integrate zero cross detect, the ac power supply triggers synchronously, lowering the power supply pollution. ? ordering information ordering number lead free halogen free package packing ut8803l-d16-t UT8803G-D16-T dip-16 tube
ut8803 cmos ic unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r502-094,b ? pin configuration 8 7 6 5 4 3 2 1 16 15 14 13 12 11 10 9 uou1 nii 1 ii 1 vref gnd tb qtest tc1 cds triac relay zcd vdd ii 2 nii 2 uou2 ? pin description pin no. pin name function 1 uou1 first stage op amp output 2 n 1 first stage op amp positive input 3 1 first stage op amp negative input 4 vref reference voltage 5 gnd ground 6 tb time base for system clock. the periods t tb =(120%)rc/1.1 7 qtest test 8 tci timer clock generator. the periods t tci =(120%)rc/1.1 9 cds cds detect, inhibitory output in the daytime. 10 triac triac output, active low 11 relay relay output, active high 12 zcd detect zero cross of ac line, synchronously pin triac 13 vdd power supply 14 2 second stage op amp negative input 15 n 2 second stage op amp positive input 16 uou2 second stage op amp output
ut8803 cmos ic unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r502-094,b ? block diagram
ut8803 cmos ic unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r502-094,b ? functional description 1. the pir amplifier (the first and second stage op amp ) amplifies pir signal. its mu ltiple can be adjust through resistance and capacitance outside. 2. if the amplificatory pir signal voltage is higher than vh (typ 1.8v) or lower than vl (typ 1.15v), the window comparer outputs high level. 3. the pulse width detector detects the window comparer ?s pulse width, if the high pulse width is more than 768*t tb , this pulse is in effect, and the relay or the traic is triggered. otherwise, it is ignored. 4. when an availability pir signal is detected, the re lay outputs high level, and the traic outputs pulse, and the counter starts to count, but if a new av ailability pir signal appears, the counter restarts to count. after 245760*t tci , the relay and triac stop output. 5 . pin cds connect a cds, it can control pin relay to keep low level in the daytime. 6 . when the ac power crosses zero line, the zero cross detector generates a pulse, and permits the triac to be triggered, after 32*t tb .
ut8803 cmos ic unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r502-094,b ? absolute maximum ratings parameter symbol ratings unit power supply v dd with repect to v ss v dd - v ss 5.6 v voltage on any pin -0.3 ~ 5.6 v operating temperature t opr -20 ~ +85 c storage temperature t stg -65 ~ +150 c note : absolute maximum ratings are those values be yond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? electrical characteristics parameter symbol test conditons min typ max unit power supply voltage v dd 5.0 10% v keep current i dd v dd 5v 1 ma reference voltage v ref 3.1 0.3v v reference voltage output current i ref 200 a gain of op amp 60 db triac sink current i sink(triac) 15 ma triac source current i tsource(triac) 50 a relay source current i source(relay) 5 ma relay sink current i sink(relay) 5 ma
ut8803 cmos ic unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r502-094,b ? typical application circuit 1. triac control 15k 47u 560k 0.047u 33n ut8803 1 2 4 3 5 6 8 7 1 6 1 5 1 3 1 4 1 2 1 1 9 1 0 uou1 nii1 cds tci qtest tb gnd vref ii1 relay zcd triac ii2 vdd nii2 uou2 820k 15k 47k {res2} 4.7k 33u 100u 100p 0.01u 10u 22u 0.01u 5.1v 1m 47 pir 1m 1m fuse cds 470u 470k 330 0.47u/250v 2. relay control load utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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