1/9 2003-12-02 pir controller pir controller M7612 ?A?w??? general description the M7612 is a pir ( passive infra-red ) controller , using analog mixing digital design technique and manufactures by cmos process which can either drive triac or relay depending on user?s choice. with special noise immunity technique , M7612 is the most stable pir controller you can find on the market. more than this , there are few components needed in its applicati on circuit which can reduce material cost and increase competitive. features ?? ?? ?? ?? ? high noise immunity. ? drive either relay or triac. ? adjustable light on duration. ? triac can be either shunt or serial connected. ? pir input. ? cds input. ? auto change on / auto mode by bonding option. ? 16 pin dip or sop package. applications ?? ?? ?? ?? ? pir light controller, motion detector, alarm system, auto-door bell. pin assignment uou1 nii1 ii1 vref vss tb qtest uou2 cds relay tci nii2 ii2 vdd triac zcd 1 16 8 9 M7612p
2/9 2003-12-02 pir controller pir controller M7612 ?A?w??? pin description pin no pin name description 1 uou1 first stage op amp output. 2 nii1 first stage op amp positive input. 3 ii1 first stage op amp negative input. 4 vref stable reference voltage. 5 vss system ground. 6 tb time base for the delay time of receiving pir signal to sent a pulse to trigger triac or a high signal to trigger relay. the delay time = r * c * 32. the pir signal patented and accepted only if the signal cycle greater than r * c * 768. when state o f relay or triac is changing form active into inactive mode. it takes more than r * c * 4069 , then system is able to receive pir signal again. 10k < r < 1m ohm 100p f Q c < 0.1uf ( reference diagram 1 ) 7 qtest for testing only. 8 tci to set up the timing of how long triac or relay is active. during the period , if the system receives the pir signal , then it restarts counting the timing again. the flash cycle show the beginning of auto mode. note width of triac pulse = r * c * 2 flash cycle r * c * 32768 the range for r 4.7k Q r < 1m ohm c 100pf < c < 0.1uf ( reference diagram 2 ) 9 cds connected to a cds for inhibiting relay or triac being triggered. if triac or relay has already being triggered by pir signal and turned into active mode , then cds can not inhibit pir again. 10 traic to trigger triac , active low. sink current 15 ma max. 11 relay to drive relay , active hign. sink current 10 ma max. source current 10 ma max. 12 zcd detect zero cross of ac line under remote mode function. 13 vdd operation voltage 5v , stand by current 0.5 ma 14 ii2 2 nd stage op amp negative input. 15 nii2 2 nd stage op amp positive input. 16 uou2 2 nd stage op amp output.
3/9 2003-12-02 pir controller pir controller M7612 ?A?w??? diagram 1 diagram 2 timing relationship qtest oscii vdd c r qtest oscii vdd c r divider signal on uou2 pin 1.25v > 220ms > 220ms < 220ms < 220ms > 220ms 1.95v window detector output pulse width detector output 220ms delay time relay pin triac pin zcd pin ( t b = 16khz )
4/9 2003-12-02 pir controller pir controller M7612 ?A?w??? block diagram cds tb tc1 1.25v detector cds voltage logic osc system clock osc vdd counter control zcd dd triac relay on vdd pir vref 3.2v width detector 1.95v window vdd ref. + - pulse + - + - ii1 nii1 ii2 M7612 uou2 nii2 uou1 1.6v + -
5/9 2003-12-02 pir controller pir controller M7612 ?A?w??? absolute maximum rating (ta=25 ) parameter sym. rating unit power supply v dd with respect to v ss v dd - v ss 5.6 v voltage on any pin -0.3 to 5.6 v operating temperature top -20 to 70 storage temperature -65 to 150 electrical characteristics characteristics sym. min. typ. max. unit conditions supply voltage v dd 4.2 5 5.5 v stand by current i st 0.9 1.0 1.2 ma operating current i dd 1.8 2.5 ma 1.8ma ,triac / 2.5ma , relay stable voltage v ref 3.0 3.2 3.4 v v dd > 4.2v source current of v ref i ref 200 ua ripple of v ref 0.5 mv input and output regulation of v ref 0.3% time base operating frequency f tb 15 16 17 khz cds operating trigger v t + 1.3 1.7 2.1 v cds operating trigger v t- 0.6 0.9 1.1 v cds source current i cds 2.6 3.5 4.4 ua cds output source current i source 9 10.4 17.4 ma cds output sink current i sink 11.6 13 21 ma 10 1300 c=0.01uf , r=4.7k-1m timer duration of out 1 t out1 0.1 13 sec c=100pf , r=4.7k-1m relay source current i rs 10 ma relay sink current i rsink 10 ma relay operating voltage v ro 13.1 18.8 v triac sink current i tsink 15 ma triac source current i tsource 50 ua
6/9 2003-12-02 pir controller pir controller M7612 ?A?w??? electrical characteristics ? . relay application note ( 1 ) to adjust delay time , change vr1 value. ( vr1=1m , delay time is R 10 sec ) ( 2 ) for different cds , r8 value should be adjusted. c1 0.01uf vr1 1m r13 100 / 1/2w c2 100pf r1 4.7k r14 5.6k c3 100uf r2 620k d1 1n4001 c4 0.01uf r3 47k d3 1n4148 c5 33uf r4 15k zd1 12v c6 0.1uf r5 820k zd2 5.6v c7 47uf r6 560k c8 0.047uf r7 15k c9 47uf r8 51k c10 100uf/10v r9 470k c11 220uf/25v r10 1m c12 0.47uf/ 400~600v r11 2.4k c13 0.047uf/ 400~600v r12 47 / 1/2w ? delay ? ( ) 103 4.7k 40khz 10 103 10k 20khz 16 103 20k 10khz 28 103 100k 2khz 130 103 200k 0.8khz 260 103 1m 0.2khz 1300 M7612 tci pin ? ? ? ? delay ??? ??? ??? ??? pir M7612p 1 16 8 9 lam p uou1 nii1 ii1 vref vss tci traic tb uou2 c5 ii2 vdd zcd cds relay c8 r7 r5 c9 c4 c1 r4 r3 c12 c6 r1 c3 c2 r14 r13 c7 r2 r6 c13 r9 r8 r10 r12 r11 d3 c11 ac l n relay zd2 c10 zd1 d1 qtest nii2 cds vr1
7/9 2003-12-02 pir controller pir controller M7612 ?A?w??? . triac application ( a ) ?? note ( 1 ) to adjust delay time , change r1 value. (delay time is R 10 sec ) ( 2 ) for different cds , r8 value should be adjusted. c1 0.01uf r1 ? c2 100pf r2 620k c3 100uf r3 47k c4 0.01uf r4 15k c5 33uf r5 820k c6 0.1uf r6 560k c7 47uf r7 15k c8 0.047uf r8 51k c9 47uf r9 470k c10 100uf/10v r10 1m c11 0.1uf/ 400~600v r11 47 / 1/2w d1 1n4004 r12 100k zd1 5.6v r13 330 r1 ? delay ? ( ) 103 4.7k 40khz 10 103 10k 20khz 16 103 20k 10khz 28 103 100k 2khz 130 103 200k 0.8khz 260 103 1m 0.2khz 1300 M7612 tci pin ? ? ? ? delay ??? ??? ??? ??? 1 16 8 9 lamp uou1 nii1 ii1 vref vss tci traic tb uou2 nii2 ii2 vdd zcd cds relay c8 r7 r5 c9 c4 c1 r4 r3 c11 c6 pir r1 c3 c2 r13 zd1 c7 r2 r 6 triac r9 r8 r10 r12 r11 c10 d1 ac l n M7612p q test cds c5
8/9 2003-12-02 pir controller pir controller M7612 ?A?w??? ?? note ( 1 ) to adjust delay time , change vr2 value. ( vr2 =1m , delay time is R 10 sec ) ( 2 ) for different cds , vr1 value should be adjusted. ( 3 ) distance = 4m. c1 0.01uf vr1 1m c2 100pf vr2 1m c3 100uf / 16v r1 4.7k c4 0.01uf r2 620k c5 220uf / 10v r3 47k c6 0.1uf r4 47k c7 22uf / 16v r5 220k c8 683 pf r6 470k c9 47uf / 16v r7 56k c10 470uf / 16v r8 800k c11 0.15uf / 400~600v r9 720k c12 1uf / 50v r10 47 / 1/2w d1 1n4007 r11 100k zd1 6.2v r12 100 1 16 8 9 lamp uou1 nii1 ii1 vref vss tci traic tb uou2 n ii2 ii2 vdd zcd cds relay c8 r7 r5 c9 c4 c1 r4 r3 c11 c6 pir r1 c3 c2 r12 zd1 c7 r2 r 6 triac r8 vr1 r9 r11 r10 c 1 0 d1 ac l n M7612p q test cds c5 vr2 c 12 ? delay ? ( ) 103 4.7k 40khz 10 103 10k 20khz 16 103 20k 10khz 28 103 100k 2khz 130 103 200k 0.8khz 260 103 1m 0.2khz 1300 M7612 tci pin ? ? ? ? delay ??? ??? ??? ???
9/9 2003-12-02 pir controller pir controller M7612 ?A?w??? ? note ( 1 ) to adjust delay time , change vr2 value. ( vr2=1m , delay time is R 10 sec ) ( 2 ) for different cds , vr1 value should be adjusted. ( 3 ) distance = 8m. * all specs and applications shown above subject to change without prior notice. ( ? , ?t ) 1 16 8 9 lamp uou1 nii1 ii1 vref vss tci traic tb uou2 nii2 ii2 vdd zcd cds relay c8 r7 r5 c9 c4 c1 r4 r3 c11 c6 pir r1 c3 c2 r12 zd1 c7 r2 r 6 triac r8 vr1 r9 r11 r10 c 1 0 d1 ac l n M7612p qtest cds c5 vr2 c 12 c1 0.01uf vr1 1m c2 100pf vr2 1m c3 100uf / 16v r1 4.7k c4 0.01uf r2 620k c5 33uf / 16v r3 47k c6 0.033uf r4 15k c7 22uf / 16v r5 820k c8 0.033 uf r6 820k c9 33uf / 16v r7 15k c10 470uf / 16v r8 800k c11 0.33uf / 400~600v r9 720k c12 1uf / 50v r10 47 / 1/2w d1 1n4007 r11 100k zd1 6.2v r12 100 ? delay ? ( ) 103 4.7k 40khz 10 103 10k 20khz 16 103 20k 10khz 28 103 100k 2khz 130 103 200k 0.8khz 260 103 1m 0.2khz 1300 M7612 tci pin ? ? ? ? delay ??? ??? ??? ???
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