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unisonic technologies co., ltd 1812a/1812B/1813 cmos ic www.unisonic.com.tw 1 of 8 copyright ? 2005 unisonic technologies co., ltd qw-r502-006,e single sound generator description the utc 1812a/1812B/1813 is a cmos lsi chip designed for use in sound effect products .it is equipped with tone circuit, noise circuit and other control logic to generate different sounds including rifle gun, machine gun, booming sound, door bell, alarm etc. the customer supplied soun d source can be analyzed and programmed into an internal rom by changing a mask layer during device fabrication. the utc 1812a/1812B/1813 is suitable for various toy applications. features *single power supply: 2.4~3.3v *low standby current at 3v, 1a typ *auto power-off function *speaker or direct piezo. application *built-in envelope control circuit *1hz-8hz programmable led flash output *minimum external components *low operating current *strong driving capability dip- 8 sop-8 dip-14 *pb-free plating product number: 1812a/1812B/1813l ordering information order number normal lead free plating package packing 1812a -d8-r 1812al -d8-r dip-8 tape reel 1812a -d8-t 1812al -d8-t dip-8 tube 1812a -s8-r 1812al -s8-r sop-8 tape reel 1812a -s8-t 1812al -s8-t sop-8 tube 1812B -d8-r 1812Bl -d8-r dip-8 tape reel 1812B -d8-t 1812Bl -d8-t dip-8 tube 1812B -s8-r 1812Bl -s8-r sop-8 tape reel 1812B -s8-t 1812Bl -s8-t sop-8 tube 1813 -d14-t 1813l -d14-t dip-14 tube
1812a/1812B/1813 cmos ic unisonic technologies co., ltd 2 of 8 www.unisonic.com.tw qw-r502-006,e pin configurations dip-8/sop-8 dip-8/sop-8 dip-14 osc1 1 2 3 4 7 6 5 key out v ss v dd 8 out led osc2 utc 1812a osc1 1 2 3 4 7 6 5 key out v ss v dd 8 out env osc2 utc 1812B 1 2 3 4 7 6 5 test1 osc1 v dd key nc test3 led osc2 env out out nc v ss test2 8 9 10 11 12 13 14 utc 1813 pin configurations pin no. 1812a 1812B 1813 symbol description 1 1 9 v ss negative power supply, gnd 2 2 12 out sound output pad, out of phase to pad 3 3 3 13 out sound output pad 4 - 2 led led flash output pad - 4 14 env sound envelope control pad 5 5 3 v dd positive power supply 6 6 4 key key input pad, low active 7 7 5 osc2 oscillator output pad 8 8 6 osc1 oscillator input pad - - 7 test1 for ic test only - - 8 test2 for ic test only - - 1 test3 for ic test only - - 10,11 nc no connection
1812a/1812B/1813 cmos ic unisonic technologies co., ltd 3 of 8 www.unisonic.com.tw qw-r502-006,e block diagram oscillator divider speed generator led divider key input logic tone generator noise generator selector & envelope circuit output divider osc 1 osc 2 key test1 test2 test 3 env v dd v ss out out led
1812a/1812B/1813 cmos ic unisonic technologies co., ltd 4 of 8 www.unisonic.com.tw qw-r502-006,e absolute maximun ratings parameter symbol value unit supply voltage v cc -0.3~5 v input voltage v in vss-0.3 ~ v dd +0.3 v operating temperature t opr 0~+70 c storage temperature t stg -40~+150 c note: 1.absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device operati on is not implied. 2.the device is guaranteed to meet performance specification within 0
~+70
operating temperature range and assured by design from -20
~+85
. electrical characteristics parameter symbol test conditions min typ max unit operating voltage v dd v dd =3v 2.4 3 3.3 v ?h? input voltage v ih v dd =3v 2.4 v ?l? input voltage v il v dd =3v 0.6 v output source current i oh v dd =3v, v oh =2.5v -1 -2 ma output sink current i ol v dd =3v, v ol =0.5v 1 2 ma env source current i env v dd =3v, v oh =2.5v -1 -2 ma led source current i led v dd =3v, v oh =2.5v -1 -2 ma standby current i st-by v dd =3v 1 5 a operating current i dd v dd =3v, no load 300 600 a oscillator frequency f osc r=270k ? 64 khz
1812a/1812B/1813 cmos ic unisonic technologies co., ltd 5 of 8 www.unisonic.com.tw qw-r502-006,e timing diagram with an envelope key oscillator out no envelope oscillator out key out
1812a/1812B/1813 cmos ic unisonic technologies co., ltd 6 of 8 www.unisonic.com.tw qw-r502-006,e application circuits speaker output with an envelope 8050 v dd v dd 100 ? 33 ? + r ose 1 2 3 45 6 7 8 v dd key osc 2 osc 1 v ss out out env utc 1812B speaker output without an envelope 8050 v dd v dd 100 ? rosc 1 2 3 45 6 7 8 v dd key osc2 osc1 v ss out out led 100 ? utc 1812a piezo output without an envelope v dd rosc 1 2 3 45 6 7 8 v dd key osc2 osc1 v ss out out led 100 ? piezo utc 1812a
1812a/1812B/1813 cmos ic unisonic technologies co., ltd 7 of 8 www.unisonic.com.tw qw-r502-006,e application circuits(cont.) hand touch trigger v dd rosc 1 2 3 45 6 7 8 v dd key osc2 osc1 v ss out out led 100 ? v dd 8050 hand touch piezo utc1812 a application circuits (1812-siren i) 8050 v dd v dd 100 ? 270k 1 2 3 45 6 7 8 v dd key osc2 osc1 v ss out out led 100 ? utc 1812a ? * the ic substrate should be connected to v dd in the pcb layout artwork . key out led t= 0. 38 sec when fosc =64khz env (repeat 15 cycle)
1812a/1812B/1813 cmos ic unisonic technologies co., ltd 8 of 8 www.unisonic.com.tw qw-r502-006,e 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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