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Part Name
Description
TDA7498 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
TDA7498
100-watt + 100-watt dual BTL class-D audio amplifier
STMicroelectronics
TDA7498 Datasheet PDF : 28 Pages
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3
3.1
Characterizations
Test circuit
Figure 3
shows the test circuit with which the characterization curves, shown in the next sections, were measured.
Figure 4
shows
the PCB layout.
Figure 3.
Test circuit for characterizations
J1
INPUT
3
L-
4
L+
1
R-
2
R+
C1
1
u
F
C2
1
u
F
C5
100nF
For
R7
J7
S
ingle-Ended 22R
Inp
u
t
C6
100nF
1
S
UB_GND
22 INPA
C
3
1nF 2
3
INNA
C4
1nF 27
S
GND
VDD
S
26 VDD
S
R1
2
8
DIAG
100k
DIAG
19 VDDPW
1
8
PGND
OUTPA
16
OUTPA
17
PGNDA
14
R6
PGNDA
15
22R
C25
100nF
PVCCA 12
PVCCA
1
3
OUTNA
10
OUTNA
11
C
3
0
1
u
F
C27
33
0pF
FREQUENCY
S
HIFT
Q1 R9
KTC
38
75(
S
)
1
8
0K
R1
3
3
C
8
F
S
47k
1
2
R14
100nF
100k
25
S
YNCLK
R
3
3
9K
24 RO
S
C
J5
3
0 GAIN0
VDD
S
3
1 GAIN1
IC1
TDA749
8
OUTPB
3
OUTPB 2
PVCCB
7
R5
22R
PVCCB
6
For
J
8
S
ingle-Ended
Inp
u
t
J6
3
5
S
VCC
C10
100nF
3
6
V
SS
C19
100nF
PGNDB
5
PGNDB
4
C
3
1
1
u
F
C11
3
V
3
F
S
3
V
3
J4
1
u
F
C12
S
2
MUTE
1
u
F
1
2
3
S
1
S
TBY
1
2
3
R4
120k
+
R2
33
k
+
OUT
IC2 IN
1
L49
3
1CZ
33
3
C29
2.2
u
F
2 GND
C9
100nF
R
8
VCC
6.
8
k
D1
1
8
V
3
2
INPB
C1
3
1nF
33
INNB
C14
1nF
21 MUTE
C15
2.2
u
F
16V
20
S
TBY
C7
2.2
u
F
16V
3
V
3
POWER
S
UPPLY
OUTNB 9
OUTNB
8
C21
33
0pF
VREF
3
4
C17
S
VR 29
10
u
F
10V
C16
10
u
F
TDA749
8
10V
CLA
SS
-D AMPLIFIER
L4
*
22
u
H
*
C2
8
220nF
*
C26
*
6
8
0nF
C24
220nF
L
3
*
22
u
H
L1
*
22
u
H
2200
u
F
C2
3
+
50V
*
C1
8
220nF
L2
*
22
u
H
*
C20
6
8
0nF
*
C22
220nF
R15
8
R
C40
220nF
C41
220nF
R16
8
R
J
3
OUTPUT
Lo
a
d = 6 ohm
L+
L-
1
R-2
R+
3
4
1
VCC
2
GND
J2
R17
8
R
C42
220nF
C4
3
220nF
R1
8
8
R
LC FILTER COMPONENT
S
Lo
a
d
6 ohm
L1,L2,L
3
,L4
22
u
H
C20,C26 C1
8
,C22,C24,C2
8
6
8
0 nF
220 nF
8
ohm
22
u
H
470 nF
220 nF
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