Ic Data Sheets - Philips 29PT5445/85 Service Manual

Circuit Descriptions, List of Abbreviations, and IC Data Sheets

9.10 IC Data Sheets

This section shows the internal block diagrams and pin layouts
of ICs that are drawn as "black boxes" in the electrical diagrams
(with the exception of "memory" and "logic" ICs).
9.10.1 Diagram A5, AN5829S (IC7841)
Block Diagram
17
7
Vcc GND
Input
14
VCA
Test Circuit
K
+
24
1
+
4.7m
16 15
L+R
L+R
Filter
Demod
75m s
De-Emph
Pilot Det
Pilot
St. PLL
Cancel
Stereo
Filter
L-R
L-R
Demod
Filter
SAP
SAP SAP Out
Demod
Filter
Filter
SAP
Det
Noise Noise
Filter Det
13 12
1
12
0.4
24-Lead PANAFLAT Package (SO-24D)
Rout Lout
L H G
2.2k
4.7m 4.7m 4.7m 4.7m
+ + +
23 22 21
20
4
2 3 5
+
+ + +
4.7m
4.7m 2.2m 4.7m
180k
I J
Figure 9-5 Internal Block Diagram and Pin Configuration
4 21 22
OUT SW
AGC
Offset
Cancel
Matrix
Offset
Cancel
Wide Band
Expand
Spectral
Expand
dbx
(L-R)/SAP
De-Emph
Switch
24
13
Unit : mm
2.0
7.2
9.3
2.2k
D C
0.047 m
19 18 17 16
AN5829S
8 9 10
6 7
+
SW1
+ 0.022 m
0.33 m
10m
b
(Ta)
a
B
Vcc
5V
L03.1U AA
1
ZAP
I C
2
Decoder
DAC
Wide Band Wide Band
RMS Det
Filter
Spectral
Spectral
RMS Det
Filter
f , 2f
H H
Trap Filter
F
0.1m 0.1m
4.7m
+
15 14 13
11 12
+
3.3m
0.1m 0.1m
(Ta)
A
* (Ta) tantalum capacitor
CL 36532044_040.eps
171203
9. EN 49
20
18
19
24
23
2
3
5
8
6
11
10
9