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| Datasheet File OCR Text: |
| RSM2258 6 ?? v1.2 ??? 1 www.chinarisong.com RSM2258 ????? 6 ?? ? i 2 c ?? ? 0 79db ? ? dip20 sop20 ? coms ? ??? ? 0 79db 1db/ ? 5 9v s/n 100db ? i 2 c ??? ?? 6 ? 20 dip sop ? ? av y
RSM2258 6 ?? v1.2 ??? 2 www.chinarisong.com ?? RSM2258 6 ?? v1.2 ??? 3 www.chinarisong.com ? i/o ? in1 i 1 ? 1 in2 i 2 ? 2 in3 i 3 ? 3 code2 ?? 4 dgnd ? 5 scl i i 2 c ? 6 sda i i 2 c 7 in4 i 4 ? 8 in5 i 5 ? 9 in6 i 6 ? 10 out6 o 6 ? 11 out5 o 5 ? 12 out4 o 4 ? 13 gnd 14 ref ? =1/2vcc 15 vcc ? 16 code1 ?? 17 out3 o 3 ? 18 out2 o 2 ? 19 out1 o 1 ? 20 RSM2258 6 ?? v1.2 ??? 4 www.chinarisong.com ?? ? RSM2258 ? sda scl ?? sda scl ? ???? scl ????? sda b?? ? scl ?? ?? sda ??? ?? ?? ? scl ???? sda ????? ??? scl ???? sda ????? ?? ?? ?? sda ??? 8 ?? msb ? RSM2258 6 ?? v1.2 ??? 5 www.chinarisong.com ?? ??? ? sda ????? ?? ?? sda ????? ?? ??????????? ? 9 ?? sda ???? ???? ? ? ?? ???????? ? ? ?? ????? ? RSM2258 ?? code1 code2 ?? ? ?1? ?0? ? code1 code2 RSM2258 ? 1 1 10001100 8ch 1 0 10001000 88h 0 1 10000100 84h 0 0 10000000 80h ? ? ?? 10001000 ?? ?? ? ?? ?? ?? =100kbits/second ? 10001000 ? ? ? ?? ? n ? + ? RSM2258 6 ?? v1.2 ??? 6 www.chinarisong.com i 2 c ?? ? RSM2258 ??????? ?? cref ? cref ? RSM2258 ?? i 2 c ?????? cref=10 f ? ? i 2 c ?????? 300ms ?? 300ms i 2 c ?? ?? ? 1 1 1 0 a3 a2 a1 a0 6 ? 1db/ 1 1 0 1 0 b2 b1 b0 6 ? 10db/ 0 0 0 1 a3 a2 a1 a0 3 ? 1db/ 0 0 0 0 0 b2 b1 b0 3 ? 10db/ 0 0 1 1 a3 a2 a1 a0 4 ? 1db/ 0 0 1 0 0 b2 b1 b0 4 ? 10db/ 0 1 0 1 a3 a2 a1 a0 2 ? 1db/ 0 1 0 0 0 b2 b1 b0 2 ? 10db/ 0 1 1 1 a3 a2 a1 a0 5 ? 1db/ 0 1 1 0 0 b2 b1 b0 5 ? 10db/ 1 0 0 1 a3 a2 a1 a0 1 ? 1db/ 1 0 0 0 0 b2 b1 b0 1 ? 10db/ 1 0 1 1 a3 a2 a1 a0 6 ? 1db/ 1 0 1 0 0 b2 b1 b0 6 ? 10db/ 1 1 1 1 1 0 0 m 6 ? m=1 m=0 ? RSM2258 6 ?? v1.2 ??? 7 www.chinarisong.com ? a3 a2/b2 a1/b1 a0/b0 ?? db 0 0 0 0 0/0 0 0 0 1 1/ 10 0 0 1 0 2/ 20 0 0 1 1 3/ 30 0 1 0 0 4/ 40 0 1 0 1 5/ 50 0 1 1 0 6/ 60 0 1 1 1 7/ 70 1 0 0 0 8 1 0 0 1 9 ? ? v s ?? 12 v t amb ? 20 +75 t stg ? 40 +125 ? ? ? ? vcc ? 5 9 10 v is 8 ma rin 6 ? 27 30 35 k vcl ? ? =0db thd=1% 2.8 3.0 vrms sc ? 90 100 110 db crange ? 79 db avmax ? -79 db astep ? 1 db ea ? ? =0~ 50db -1.0 0 +1.0 db amute ? a-weighting 90 95 98 db thd ? ? =0db 200mvrms 0.003 0.005 0.01 % noise aweighting 3 5 v s/n 0db=1vrms a weighting 100 105 110 db ro 600 900 go -0.5 0 +0.5 db vomax ? 6 ? thd=1% 2.3 2.6 2.9 vrms RSM2258 6 ?? v1.2 ??? 8 www.chinarisong.com i 2 c ? ? ? v ih ?? 0.5 v dd v il ?? 0.2 v dd t init ?? c ref =10 f 250 300 ms ??? |
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