TDA9847 Philips Semiconductors, TDA9847 Datasheet - Page 18

• Manufacturer Part Number: TDA9847
• Description: TV and VTR stereo/dual sound processor with digital identification
• Manufacturer: Philips Semiconductors

Philips Semiconductors
INTERNAL CIRCUITRY
1995 May 23
TV and VTR stereo/dual sound processor
with digital identification
C
C
V
AGC
C
DCL
C
V
V
V
V
C2
i pil
C4
C1
LP
ref
i2
i1
i3
i4
2
3
4
5
6
7
8
11
1
Z\xV
9
10
12
25 k
V
25 k
2 k
P
P
V
50 k
2 k
2 k
5 k
P
15 k
35 k
50 k
50 k
5 k
Z\xV
Z\xV
Z\xV
ESD protection diode
for pins 4 to 17, 21 and 23
Z\xV
5 k
P
P
P
V
P
V
V
V
P
V
P
P
P
P
40 A
22.5 k
5 k
I
I
I
B
B
I
3 A
3 A
3 A
B
60 A
B
V
V
P
P
40 A
I
B
Fig.7 Internal circuits.
V
25 k
AF inputs
P
3 A
I
B
zener diode protection
for pins 1, 2, 3, 18, 19, 20 and 24
TDA9847
V
P
18
V
P
60 A
13 k
AF outputs
5 k
–
+
3 pF
+
–
+
–
–
200 A
200 A
+
–
V
V
+
P
P
5 k
V
P
5 k
3 A
+5 V
2 k
200 A
200 A
MED807
V
V
P
P
24
23
22
20
19
21
18
17
16
14
15
13
GND
XTAL
V
LEDST
C
V
V
C3
C
LEDDU
V
V
P
D1
o1
o2
D2
o3
o4
Preliminary specification
TDA9847