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SM6451B bảng dữ liệu(PDF) 8 Page - Nippon Precision Circuits Inc

tên linh kiện SM6451B
Giải thích chi tiết về linh kiện  Audio Variable Volume IC
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nhà sản xuất  NPC [Nippon Precision Circuits Inc]
Trang chủ  http://www.npc.co.jp/en
Logo NPC - Nippon Precision Circuits Inc

SM6451B bảng dữ liệu(HTML) 8 Page - Nippon Precision Circuits Inc

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SM6451B
NIPPON PRECISION CIRCUITS INC.—8
D9, D8
Channel select bits. The selected channel(s) are shown in table 1.
D7 to D0
Attenuation register (ATT) set bits.
Table 1. Channel select
D9
D8
Selected channel
LOW
LOW
Both left and right channels
LOW
HIGH
Left channel
HIGH
LOW
Right channel
HIGH
HIGH
No change
Table 2. Attenuation setting1
1.
Outputs are muted after system reset.
Attenuation error is changed dependent on the supply voltage when attenuation level is under – 60dB. In the case of the supply voltage being
under 2.6V, mute level inverses up to the same level of – 80dB setting or more. (see Figure 6)
Attenuation
ATTH
D7
D6
D5
D4
D3
D2
D1
D0
0 dB
00
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
−1 dB
01
LOW
LOW
LOW
LOW
LOW
LOW
LOW
HIGH
−2 dB
02
LOW
LOW
LOW
LOW
LOW
LOW
HIGH
LOW
:
:::::::::
−15 dB
0F
LOW
LOW
LOW
LOW
HIGH
HIGH
HIGH
HIGH
−16 dB
10
LOW
LOW
LOW
HIGH
LOW
LOW
LOW
LOW
−17 dB
11
LOW
LOW
LOW
HIGH
LOW
LOW
LOW
HIGH
:
:::::::::
−63 dB
3F
LOW
LOW
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
−64 dB
40
LOW
HIGH
LOW
LOW
LOW
LOW
LOW
LOW
−65 dB
41
LOW
HIGH
LOW
LOW
LOW
LOW
LOW
HIGH
:
:::::::::
−79 dB
4F
LOW
HIGH
LOW
LOW
HIGH
HIGH
HIGH
HIGH
−80 dB
50
LOW
HIGH
LOW
HIGH
LOW
LOW
LOW
LOW
Mute
51
LOW
HIGH
LOW
HIGH
LOW
LOW
LOW
HIGH
Mute
52
LOW
HIGH
LOW
HIGH
LOW
LOW
HIGH
LOW
:
:::::::::
Mute
FE
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
LOW
Mute
FF
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH


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