technical data IL2410 tone ringer d suffix soic ordering information IL2410n pl ast i c IL2410d soic t a = -45 to 6 5 c for package the IL2410 is a bipolar integrated circ uit designed for telephone bell replacem ent. ? designed for telephone bell replacem ent ? low curent drain ? adjustable 2-frequency tone ? ad j u stab le w a rb lin g rate ? ext e nsi on tone r i nger m odul es ? al arm s or ot her al ert i ng devi ces ? ext e rnal tri ggeri ng or r i nger di sabl e ? bu ilt-in h y steresis p r ev en ts false trig g e rin g an d ro tary d i al ?ch i rp s? logic diagram pin 1 = v cc pin 5 = gnd 1. ou tp u t am p lifier 2. hig h freq u e n c y o s cillato r 3. lo w freq u e n c y o s cillato r 4. hysteresis regulator (reg u l ato r circu it h a s b u ilt-in h y steresis to p r ev en t false t r i ggeri ng and rot a ry di al ?c hi rps?) pin assignment 1
IL2410 pin description nam e p i n description v cc 1 positive power supply. re 2 initiation of oscillation start input lfi 3 low frequency oscillator input lf0 4 lo w freq u e n c y o s cillato r o u t p u t gnd 5 negat i v e power suppl y hf0 6 hig h freq u e n c y o s cillato r o u t p u t hfi 7 high frequency oscillator input o u t 8 t o n e out put maximum ratings * sym b o l p a r a m e t e r valu e un i t v cc dc suppl y vol t a ge (referenced t o gnd) t o +30.0 v p d power dissipation in still air, plastic dip 400 m w tst g st orage tem p erat ure -65 t o +150 c * m a xi m u m r a t i ngs are t hose val u es bey ond whi c h dam a ge t o t h e devi ce m a y occur. functional operation should be restricted to the reco m m e nded operating conditions. recommended operating conditions sy m bol p a r a m e t e r m i n m a x uni t v cc dc suppl y vol t a ge (referenced t o gnd) 13.0 29.0 v t a operat i ng tem p erat ure -45 +65 c thi s devi ce cont ai ns prot ect i on ci rcui t r y t o guard agai ns t dam a ge due t o hi gh st at i c vol t a ges or el ect ri c fi el ds. however, precautions m u st be taken to avoid applications of any voltage highe r than m a xim u m rated voltages to this hi gh-i m pedance ci rcui t . for proper operat i on, v in and v out shoul d be const r ai ned t o t h e range gnd (v in or v out ) v cc . unused i nput s m u st al way s be t i e d t o an appropri a t e l ogi c vol t a ge l e vel (e.g., ei t h er gnd or v cc ). unused out put s m u st be l e ft open. 2
IL2410 electrical characteristics (voltages referenced to gnd, t a = -45 to +65 c) g u a r a n t e e d lim i t s sy m bol p a r a m e t e r test c ondi t i o n s m i n ty p m a x uni t v si initiation supply voltage (1) see fi g. 1 16.8 21.2 v i si initiation supply current (1) 1 . 4 4 . 2 m a v sus sust ai ni ng vol t a ge (2) see fi g. 1 9.5 12.2 v i sus sust ai ni ng c u rrent (2) no load v cc =v sus see fi g. 1 0 . 7 2 . 5 m a v tr trigger voltage (3) v cc = 1 5 v 8 . 8 1 2 . 2 v i tr trigger current (3,5) v cc = 1 5 v 5 . 0 1 0 0 0 a v dis disable voltage (4) v cc = 2 1 v - 0 . 7 v i dis disable current (4) v cc = 1 5 v - 2 0 - a v oh hi gh-level out put vo ltag e v cc =21v, i oh =-15m a, pin 6=6v, pin 7=gnd 16.7 2 1 . 0 v v ol low-level out put vo ltag e v cc =21v, i ol =15m a, pin 6=gnd, pin 7=6v - 1 . 8 v i in m a xi m un input leakage current (pin 3) pi n 3=6v, pin 4=gnd, v cc =21v - 1 . 0 a (pin 7) pin 7=6v, pin 6=gnd, v cc =21v - 1 . 0 a f h1 hi gh frequency 1 r 3 =191k ? ,c 3 =6800pf 461 5 6 3 h z f h2 hi gh frequency 2 r 3 =191k ? ,c 3 =6800pf 576 7 0 4 h z f l low frequency r 2 =165k ? , c 2 =0.47 f 9 . 0 1 1 . 0 h z notes: 1. initiation supply voltage (v si ) is the supply voltage required to start the tone ringer oscillating. 2. sust ai ni ng vol t a ge (v sus ) is the supply voltage required to m a intain oscillation. 3. v tr and i tr are th e co n d itio n s ap p lied to trig g e r in to start o s cillatio n fo r v sus v cc v si . 4. v dis and i dis are th e co n d itio n s ap p lied to trig g e r in to in h i b it o s cillatio n fo r v si v cc . 5. trig g e r cu rren t m u st b e lim ited to th is v a lu e ex tern ally. 3
IL2410 circuit current-supply voltage (no load) fi gure 1 application circuit fi gure 2 4
IL2410 application note the application circuit illustrates the use of the IL2410 devices in typical telephone or extens ion tone ringer application. the ac ri nger si gnal vol t a ge appears across t h e tip and r i ng i nput s of t h e ci rcui t and i s at t e nuat e d by capaci t o r c 1 and resi st or r 1 . c 1 al so provi des i s ol at i on from dc vol t a ges (48v) on t h e exchange l i n e. after fu ll wav e rectificatio n b y th e b r id g e d i o d e , th e wav e fo rm is filtered b y cap acito r c 4 t o provi de a dc suppl y for t h e t one ri nger chi p . as this voltage exceeds the initiation voltage (v si ), o s cillatio n starts. w i t h t h e com ponent s shown, t h e oupt ut frequency chops bet w een 512(f h1 ) and 640hz(f h2 ) at a 10hz(f l ) rate. the l oudspeaker l o ad i s coupl ed t h rough a 1300 ? to 8 ? ransform er. the out put coupl i ng capaci t o r c 5 i s requi red wi t h t r ansform e r coupl ed l o ads. w h en driving a piezo-ceram ic tran sducer t y pe l o ad, t h e coupl i ng c 5 and t r ansform e r (1300 ? :8 ? ) are not requi red. however, a current l i m i t i ng resi st or i s requi red. th e lo w freq u e n c y o s cillato r o s cillates at a rate (f l ) controlled by an external resistor (r 2 ) and capacitor (c 2 ). the frequency can be det e rm i n ed usi ng t h e rel a t i on f l =1/ 1 .289r 2 xc 2 . th e h i g h freq u e n c y o s cillates at a f h1 , f h2 cont rol l e d by an ext e rnal resi st or (r 3 ) and capacitor (c 3 ). the frequency can be det e rm i n ed usi ng t h e rel a t i on f h1 =1/ 1 .504r 3 xc 3 , f h2 =1/ 1 .203r 3 xc 3 . triggering IL2410 from cmos or ttl logic figure 3 figure 4 5
IL2410 equivalent circuit (pin 2 input) inhiviting oscillation figure 5 figure 6 programming the IL2410 initiation supply voltage figure 7 figure 8 6
IL2410 n s u f f i x p l as t i c di p ( m s ? 00 1b a ) sy m b o l m i n m a x a 8. 51 10. 16 b 6. 1 7 . 1 1 c 5. 33 d 0. 36 0. 56 f 1. 14 1. 78 g h j 0 10 k 2. 92 3. 81 no t e s : l 7. 62 8. 26 1. d i m e n s i o n s ?a ?, ?b ? d o n o t i n cl u d e m o l d f l as h o r p r o t r u s i o n s . m 0. 2 0 . 3 6 m a x i m u m m o l d f l a s h o r p r o t r u s i o n s 0. 25 m m ( 0 . 010) p e r s i d e . n 0. 38 d su f f i x so i c (m s - 0 1 2 a a) sy m b o l m i n m a x a 4. 8 5 b 3. 8 4 c 1. 35 1. 75 d 0. 33 0. 51 f 0. 4 1 . 2 7 g h j 0 8 no t e s : k 0. 1 0 . 2 5 1. d i m e n s i o ns a a n d b d o no t i n c l ud e m o l d f l a s h o r p r ot r u s i on . m 0. 19 0. 25 2. m a x i m u m m o l d f l a s h o r p r o t r u s i o n 0. 15 m m ( 0 . 006) p e r s i d e p 5. 8 6 . 2 fo r a ; fo r b ? 0. 25 m m ( 0 . 010) p e r s i d e . r 0. 25 0. 5 1. 27 5. 72 d i me n s i o n , mm d i me n s i o n , mm 2. 54 7. 62 a b h c k c m j f m p g d r x 4 5 se a t i n g pl a n e 0 . 25 (0 . 0 10 ) m t -t - 1 8 4 5 l h m j a b f g d se a t i n g pl a n e n k 0 . 2 5 ( 0 .01 0 ) m t -t - c 1 8 4 5 7
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