Philips 32PF9968/10 Service Manual page 34

EN 34 9. TEH1.0E LA
9.5.3 Audio Amplifier, TDA7057 (U600)
BLOCK DIAGRAM
DC volume
control 1
DC volume
control 2
PINNING
SYMBOL
VC1
n.c.
V
l (1)
V
P
V
l (2)
SGND
VC2
OUT2+
PGND2
OUT2−
OUT1−
PGND1
OUT1+
Circuit Descriptions, Abbreviation List, and IC Data Sheets
TDA7057AQ
3
input 1
1
STABILIZER
V ref
5
input 2
7
2
not
connected
PIN
1 DC volume control 1
2 not connected
3 voltage input 1
4 positive supply voltage
5 voltage input 2
6 signal ground
7 DC volume control 2
8 positive output 2
9 power ground 2
10 negative output 2
11 negative output 1
12 power ground 1
13 positive output 1
Figure 9-4 Internal block diagram and pin configuration of the audio amplifier
V
P
4
I i
Ι
I i
TEMPERATURE
PROTECTION
I i
ΙΙ
I i
6 12
signal power
ground ground 1
DESCRIPTION
13 positive
output 1
11
negative
output 1
10 negative
output 2
8
positive
output 2
9
power
ground 2
VC1 1
n.c. 2
V
3
I (1)
V P
4
V
I (2) 5
6
SGND
VC2 7 TDA7057AQ
OUT2 8
PGND2 9
OUT2 10
OUT1 11
PGND1 12
OUT1
13
G_16500_029.eps
301106