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Datasheet File OCR Text: |
?? SJ2258 url:http://www.szsanjing.com ------------------ tel 0755-29663136 fax 0755-29663137 ------------------ page: 1 / 9 6 ? SJ2258 SJ2258 ?? cmos ? 6 ic, i2c ?? ,0.-79db,1db/step ? , ? ? , ?? , av ???? i 2 c ?? , ??? dip ?? ? , ? 0.-79db,1db/ ? ? 5v-7.5v ? ,s/n>100db(a-weight) >100db ? : av y ?? ? :
?? SJ2258 url:http://www.szsanjing.com ------------------ tel 0755-29663136 fax 0755-29663137 ------------------ page: 2 / 9 ? ?? SJ2258 url:http://www.szsanjing.com ------------------ tel 0755-29663136 fax 0755-29663137 ------------------ page: 3 / 9 ?? (i2c bus) ?? (i2c bus interface) ? data clk ?? SJ2258 ?????o data clk ?? ??? ? (data validity) clk ? ? ? ? ? data line ????????? clk ? ? ? ? ? data line ??p??? ?? (start and stop conditions) (1)clk ???? (2)data ????????? ? ? ? (1)clk ???? (2)data ????????? ? ? ?? ??? (byte format) ??? data line ? (byte) ? (bit) ????? ? ? ? (msb) ?????? ? ? ? ? (acknowledge) ????? ( ? ) ? data line ?????? (SJ2258) ???? data line ? (SJ2258) ?? data line ???????? ? ??? SJ2258 ???? (byte) ??? ? ? ? ???? ? (clock) ? data line ?????? ? ? ? ??? (transmission without acknowledge) ?? SJ2258 ? ? ? ??? ???????? ??? SJ2258 ???? (byte) o??? (clock) ????????? ????? ?? SJ2258 url:http://www.szsanjing.com ------------------ tel 0755-29663136 fax 0755-29663137 ------------------ page: 4 / 9 ? (interface protocol) ? 1. ? start 2. ??? 3.ack= ? 4. ? 5. stop ?s (data byte) ?? (software specification) SJ2258 ? (address code) SJ2258 ? code 1(pin 17) code 2(pin 4) ??? code 1 code 2 vcc ? 1, gnd ? 0, ?? SJ2258 url:http://www.szsanjing.com ------------------ tel 0755-29663136 fax 0755-29663137 ------------------ page: 5 / 9 i2c ?? SJ2258 ??????????? cref ?? cref ? 10f ? ? 300ms ??? ic i2c ??? ??? ? SJ2258 1. ?? SJ2258 ??????? " c0h " ?? ic ???? 2. SJ2258 ??????????? ? 3. ? SJ2258 ? 10db 1db ????? 10db 1db ??? ic ? ???? ?? SJ2258 url:http://www.szsanjing.com ------------------ tel 0755-29663136 fax 0755-29663137 ------------------ page: 6 / 9 ?????? ? (data bytes) 1. 2. ?? ?? SJ2258 url:http://www.szsanjing.com ------------------ tel 0755-29663136 fax 0755-29663137 ------------------ page: 7 / 9 ? ?? vs ? 9 v tamb ? -20.75 tstg ? -40.125 ( :vdd=7.5v,vi=1vrms,f=1khz,temp=27 ? ?? ? vdd ?? 5 7.5 volt is ? 7 10 12 ma rin fl,fr,ctr,sub,sl,s r 22 33 42 k ? vcl ? volume=0db,thd=1% 2.8 3.0 vrms sc 90 100 110 100 110 db c range ? 79 db avmax ?? -79 db astep ? 1 db ea ? volume=0.-50db -1.0 0 +1.0 db amute ? a ? 90 95 98 db thd ? volume=0db, 200mvrms 0.003 0.005 0.01 % noise a ? 3 5 v s/n ? 0db=1vrms,a ? 100 105 110 db ro 600 900 ? go -0.5 0 +0.5 db vomax ? fl,fr,center,sub, sl,sr thd=1% 2.3 2.5 2.8 vrms i2c vil ?? ? 2.4 2.5 volt vlh ?? ? 2.8 3.0 volt vinit ?? cref=10f 250 300 ms ?? SJ2258 url:http://www.szsanjing.com ------------------ tel 0755-29663136 fax 0755-29663137 ------------------ page: 8 / 9 ??? ?? SJ2258 url:http://www.szsanjing.com ------------------ tel 0755-29663136 fax 0755-29663137 ------------------ page: 9 / 9 ??? |
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