Technical Note
25/30
BD5446EFV
www.rohm.com
2010.05 - Rev.B
© 2010 ROHM Co., Ltd. All rights reserved.
●
Application Circuit Example(R
L_SP
=6
Ω
)
40
39
38
37
36
35
34
33
32
31
30
29
48
47
46
45
44
43
42
41
28
3
4
5
6
7
8
9
14
15
16
17
18
19
20
21
10
11
12
13
22
23
24
51
50
49
54
53
52
27
26
25
MUTEＸ
PDX
3.3V
VSS
LRCLK
(fs=32kHz～48kHz)
BCLK
(64fs)
SDATA2
SDATA1
I
2
S/LJ
Interface
Gain
Selector
PWM
Modulator
×8 Over
Sampling
Digital
Filter
Control
Interface
TEST
DAC
Selector
High Temperature Protection
Under Voltage Protection
Clock Stop Protection
Output Short Protection
Output DC Voltage Protection
OUT_DAC1
1μF
OUT_DAC2
1μF
RESETＸ
1
2
SYS_CLK
(256fs)
100kΩ
ERROR
GNDA
3.3V
VCCA
10μF
VCCA
NC
REG_G2
GNDA
1μF
FILA
Power
Limiter
GNDA
Digital Audio
Source
μ-con
DAC
REG_3
1μF
REG_G1
Driver
1P
Driver
1N
GNDP1
REG_G1
REG_G1
VCCP1
NC
VCCP1
GNDP1
1μF
15μH
15μH
220μF
0.1μF
0.47μF
GNDP1
0.1μF
1μF
6Ω
NC
NC
Driver
2P
Driver
2N
GNDP2
REG_G2
REG_G2
VCCP2
NC
NC
NC
VCCP2
GNDP2
1μF
15μH
15μH
220μF
0.1μF
0.47μF
GNDP2
0.1μF
1μF
Lch
(SDATA1)
GNDP2
3.3μF
GNDP1
3.3μF
(
)
( )
NC
(Rch)
(Lch)
6Ω
Rch
(SDATA1)
I
2
S/LJ
Selector
1μF
FILP
5.6Ω
470pF
5.6Ω
470pF
5.6Ω
470pF
5.6Ω
470pF
( )
VSS
GNDA
0.1μF
1μF
1μF
C1
C2
C4
C5
C22
C23
R24
C25
C25D
C27
L31
C31A
C31B
R38B
C28D
C31
C28
C38B
C38A
L38
C38
C42
L43
C43A
C43B
R43B
C53
C53D
R50B
C50B
C50A
C43C
L50
C49
R31B
C31C
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