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Table 1
4 Functions and Service Data of TDA7057AQ (N600)'s Pins
Functi
on Description
Pin No.
Volume control input
1
Not connected
2
Audio R signal input
3
S
upply voltag
e
4
Audio L signal input
5
G
o r
u
n
d
6
Volume control input
7
Left ch
annel in-phase signal
8
G
o r
u
n
d
9
Left channel inverting signal output
1
0
Ri
ght
channe
11
ou
tput
G
o r
u
n
d
1
2
R
ight
channe
13
ou
tput
Table 15 Functions and Service Data of TDA8356 (N400)'s Pins
Pin
No.
1
I
dr
ive(pos)
2
I
dr
ive(neg)
3
V
P
4
V
O(B)
5
GND
6
V
FB
7
V
O(A)
8
V
O(guard)
9
V
I(fb)
Ref
outpu
t
l
inverting
signal
l
in-phase
signal
Symbol
Digital Multimeter
erenc
e Voltage
Positive Resistance
(V)
(20K )
0.
35
0
2.3
6
15.
23
2.36
0
0.35
7.35
0
7.
39
7.39
0
7.4
Digital Multimeter Victor DT890D
Reference
Positive Resistance
Voltag
e (V)
2.
4
2
.4
1
5
4 .
7
7 .
0
45
.0
7
.5
0
2 .
7
7 .
41
Negati
ve Resi
(2
0K
7.05
7.05
23.54
54.61
0.41
0.41
23.54
54.61
0
7.05
7.05
18.74
21.49
0
18.4
7
21.47
18.47
21.47
0
16.47
21.46
Negative Resistance
(K
)
(K )
27.7
20.3
27.7
20.4.
26.3
13.5
6.1
0
113
.3
13.7
6
.1
10.0
6.1
stance
)
0
0
0
6.1
0
6.1
9.7.
6.1
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