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SM6453AB Arkusz danych(PDF) 11 Page - Nippon Precision Circuits Inc

Numer części SM6453AB
Szczegółowy opis  3-wire Serial Data Volume Control for Headphone Amplifier IC
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Producent  NPC [Nippon Precision Circuits Inc]
Strona internetowa  http://www.npc.co.jp/en
Logo NPC - Nippon Precision Circuits Inc

SM6453AB Arkusz danych(HTML) 11 Page - Nippon Precision Circuits Inc

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SM6453AB
NIPPON PRECISION CIRCUITS INC.—11
I
D7 to D0: EVR gain control bits. MUTE when system reset.
Figure 3. Electronic volume gain (GEVR) setting and output voltage gain (GO)
EVR gain
(GEVR)
LOUT, ROUT gain
(GO)
D7
D6
D5
D4
D3
D2
D1
D0
HEX
0dB
+ 12dB
LLLLLLLL
00
– 1dB
+ 11dB
LLLLLLL
H
01
– 2dB
+ 10dB
LLLLLL
H
L
02
:
:
:::::::::
− 15dB
− 3dB
LLLL
HHHH
0F
− 16dB
− 4dB
LLL
H
LLLL
10
− 17dB
− 5dB
LLL
H
LLL
H
11
:
:
:::::::::
− 63dB
− 51dB
L
L
HHHHHH
3F
− 64dB
− 52dB
L
H
LLLLLL
40
− 65dB
− 53dB
L
H
LLLLL
H
41
:
:
:::::::::
− 79dB
− 67dB
L
H
L
L
HHHH
4F
− 80dB
− 68dB
LHLH
LLLL
50
MUTE
MUTE
LHLHL
L
L
H
51
MUTE
MUTE
LHLHL
LHL
52
:
:
:::::::::
MUTE
MUTE
HHHHHHH
L
FE
MUTE
MUTE
HHHHHHHH
FF
LIN1
LIN2
RIN1
RIN2
Input
Selector Block
0dB
EVR Block
Headphone
Amplifier Block
Gain (GEVR) :
0 to
−80dB variable,
MUTE
Gain (GHPA) :
+12dB fixed, MUTE
LOUT
ROUT
Gain: GEVR + GHPA = GO
GO: +12dB to
−68dB, MUTE
Microcontroller
Interface


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