treasure link technology ltd. ? ?? ?? e ?t 1? ?? TL2272-95 * all specs and applications shown above s ubject to change without prior notice. ( ????a??????h1???? , ?1????t?eeet?y ) ver 1.02 page 1 of 3 TL2272-95 3 8 decoder doorbell general description the main application area for the TL2272-95 device is for remote control door bells working together with tl2262. containing all the f unctions of the tl2272 decoder and melody generator, the device eliminates the need for customers to incorporate an external op-amp and melody generator ic within their product applications, in the process significantly reducing overall product costs. in addition to being fully compatible with the tl2272 ci rcuitry, the device includes t he following features; internal 2 channel tone generator and current type audio output. features 1. operating voltage: 2.4v~5.0v 2. 2 channel dual tone generator 3. on chip rc oscillator 4. current type d/a output 5. tl2262 encoder pair with 6. tone optional : d0 : ding-dong ding-dong d1 : ding-ding ding-ding d2 : westminster tunes d3 : for alice 7. 16-pin dip package block diagram oscillator buffer comparat address control divider tone osc1 osc2 si a1 -------- a7 aud test vdd vss test 1 opt free datasheet http:///
treasure link technology ltd. ? ?? ?? e ?t 1? ?? TL2272-95 * all specs and applications shown above s ubject to change without prior notice. ( ????a??????h1???? , ?1????t?eeet?y ) ver 1.02 page 2 of 3 pin assignment pin description pin no. pin name i/o description 1~8 a0~a7 i address pin 9 vss - negative power supply 10 test i test pin 11 aud o audio output 12 si i serial data input 13 osc1 i oscillator input pin 14 osc2 o oscillator output pin 15 test1 i test pin 16 vdd - positive power supply dc characterics vdd=4.5v, fosc=80khz, t a =25 o c (unless otherwise noted.). symbol parameter min. typ. max. unit remark v dd operating voltage 2.4 - 5 v i stb standby current - 2 - ua oscillator stop, @v dd =4.5v i dd operating current - 0.3 1 ma no load , @v dd =4.5v i aud aud output current 3 5 - ma v ih high input voltage 3.5 - 5 v v il low input voltage 0 - 1 v f osc oscillator frequency - 80 - khz external rosc 270k t emp. operating temperature 0 25 60 o c 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 TL2272-95 a6 a2 a1 a5 a4 a3 a0 a7 vss vdd osc1 osc2 test aud si test1 free datasheet http:///
treasure link technology ltd. ? ?? ?? e ?t 1? ?? TL2272-95 * all specs and applications shown above s ubject to change without prior notice. ( ????a??????h1???? , ?1????t?eeet?y ) ver 1.02 page 3 of 3 functional description the sound is determined by the d0~d11 pins on the tl2262. d0=1 d1=1 d2=1 d3=1 tone ding-dong ding-dong ding-ding ding-ding westminster tunes for alice application diagram b e c ir/rf tl2262-h 180k 270k 9 16 15 14 13 12 11 10 vss TL2272-95 vdd so osc1 osc2 d0 d1 d2 d3 te vss a7 a6 a5 a4 a3 a2 a1 a0 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 vdd test1 osc2 osc1 si aud 1k ir/rf test a7 a6 a5 a4 a3 a2 a1 a0 8 7 6 5 4 3 2 1 free datasheet http:///
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