STMicroelectronics 10 W + 10 W class-D audio amplifier demonstration board based on the TDA7491P STEVAL-CCA028V1 STEVAL-CCA028V1 Fiche De Données
Codes de produits
STEVAL-CCA028V1
Schematic
STEVAL-CCA028V1
2/4
Doc ID 022324 Rev 1
1 Schematic
Figure 1.
Circuit schematic
,1/
,1/
,15
,15
9&&
*1'
287/
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2875
2875
7'$ 3
LC FILTER COMPONENT
Load
L1,L2,L3,L4
C20,C26
4 ohm
6 ohm
8 ohm
15 uH
22 uH
33 uH
220 nF
220 nF
470 nF
087(
67%<
932:(56833/<
)RU6LQJOH(QGHG
)RU6LQJOH(QGHG,QSXW
Input
SYNCLK
VDDS
VCC
3V3
16 ohm
68 uH
220 nF
&/$66'$03/,),(5
(TDA7491P/LP/HV)
OPTION
+
C23
470uF
25V
C5
100nF
R3
39K
L4
C1 470nF
C2 470nF
C11 470nF
C12 470nF
C8
100nF
C25
100nF
C19
100nF
C27
330pF
R6
22R
L3
C28
100nF
C24
100nF
L1
C21
330pF
R5
22R
L2
C18
100nF
C22
100nF
C3
1nF
C4
1nF
C13
1nF
C14
1nF
32 INPB
36 VSS
9
OUTNB
5
PGNDB
7
PVCCB
3
OUTPB
10
OUTNA
12
PVCCA
14
PGNDA
16
OUTPA
33 INNB
8
OUTNB
4
PGNDB
21 MUTE
6
PVCCB
2
OUTPB
29
SVR
11
OUTNA
1 SUB_GND
22 INPA
23 INNA
27 SGND
26 VDDS
28 DIAG
19 VDDPW
18 PGND
20 STBY
24 ROSC
31 GAIN1
35 SVCC
30 GAIN0
25 SYNCLK
17
OUTPA
15
PGNDA
34
VREF
13
PVCCA
IC1
TDA7492P
R1 100k
R7
22R
C6
100nF
R433k
R2 N
5
N
&
Q)
C10
100nF
&
Q)
-
-
2
1
3
6
2
1
3
6
&
Q)
&
X)
2 GND
1
OUT
3
IN
,&
L4931CZ33
+
C15
2.2uF
16V
1
2
2
J4
1
2
J3
1
2
2
J2
-
-
1
3
2
4
J1
+
C7
2.2uF
16V
+
C16
1uF
16V
+
C17
1uF
16V
R13
9.1k
+
C30
10uF 16V
+
C31
+
C32
+
C33