SG Micro SGM4703 - Page 30

High-Power Stereo Class-D Audio Power Amplifier
SGM4703 with Adjustable Power Limit and Automatic Level Control
30
DECEMBER 2022
SG Micro Corp
www.sg-micro.com
TYPICAL APPLICATION CIRCUITS (continued)
SGM4703
EN
FAULTB
INPL
INNL
GAIN
FREQ
AV DD
AG ND
GV DD
PLIMIT
INNR
INPR
ALC
MODS
PV DD
PV DD
BS TPL
VO PL
PG ND
VO NL
BS T NL
BS T NR
VO NR
PG ND
VO PR
BS TPR
PV DD
PV DD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
EN
INL
V
DD
R
EN
10 kΩ
C
IN
1μF
C
IN
1μF
R
AV D D
10Ω
R
2
R
1
C
PLIMIT
0. 1μF
INR
C
AV D D
1μF
C
G V DD
1μF
C
IN
1μF
C
IN
1μF
LS L
LS R
SP EAK ER
SP EAK ER
0. 1μF
0. 1μF
0. 1μF
C
PV D D
10 nF
C
PV D D
10 nF
0. 1μF
C
PV D D
1μ
F
C
B1
L
F1
Ferrit e B ead
C
F1
1nF
C
F2
1nF
L
F2
Ferrit e B ead
L
F3
Ferrit e B ead
L
F4
Ferrit e B ead
C
F3
1nF
C
F4
1nF
C
B2
C
B3
C
B4
C
PV D D
1μF
M UT E
R
3
10 kΩ
Q
1
NPN
V
DD
C
PV D D
22 0μF
+
V
DD
C
PV D D
22 0μF
+
Figure 18. Single-Ended Inputs in APL Mode with Mute Control
SGM4703
EN
FAULTB
INPL
INNL
GAIN
FREQ
AV DD
AG ND
GV DD
PLIMIT
INNR
INPR
ALC
MODS
PV DD
PV DD
BS TPL
VO PL
PG ND
VO NL
BS T NL
BS T NR
VO NR
PG ND
VO PR
BS TPR
PV DD
PV DD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
EN
INP
INN
V
DD
R
EN
10 kΩ
C
IN
1μF
C
IN
1μF
R
AV D D
10Ω
R
ALC
C
AV D D
1μF
C
G V DD
1μF
LS
SP EAK ER
0. 1μF
0. 1μF
0. 1μF
C
PV D D
10 nF
C
PV D D
10 nF
0. 1μF
C
PV D D
1μF
C
B1
L
F2
10μH
1μF
C
F1
1μF
C
F2
4Ω
C
B2
C
B3
C
B4
C
PV D D
1μF
68kΩ
L
F1
10μH
V
DD
C
PV D D
22 0μF
+
V
DD
C
PV D D
22 0μF
+
Figure 19. Differential Inputs in ALC-2 Mode with DSM in PBTL Configuration