AN5819K Datasheet, PDF (1/11 Pages) Panasonic Semiconductor – Sound multiplex demodulator IC for TV in the North American market

ICs for TV
AN5819K
Sound multiplex demodulator IC for TV in the North American market
s Overview
The AN5819K is a single chip IC, which includes a
sound multiplex demodulator for Zenith TV system and
the dbx TV sound noise reduction function.
s Features
• Stereo demodulation, SAP demodulation and dbx noise
reduction are integrated into a single chip
• Enabling various kinds of adjustment and mode
changeover thanks to I²C bus
• Built-in input volume (I²C control) for interface with
intermediate frequency processing IC
s Applications
• TV and VCR for the North American market
(A licensing agreement with THAT Corporation is nec-
essary in order to use this IC with built-in dbx-TV noise
reduction function.)
s Block Diagram
Unit: mm
1
28
2
27
3
26
4
25
5
24
6
23
7
22
8
21
9
20
10
19
11
18
12
17
13
16
14
15
8.4±0.3
1.05±0.25
3.05±0.25
4.8±0.25
3° to 15°
10.16±0.25
0.3^{+–00..105}
SDIP028-P-0400B
11
MPX in ^{12 Input}
VCA
Pilot det.
Stereo
filter
St.PLL
L+R
demod.
L−R
demod.
SAP
SAP
filter
demod.
Noise
filter
SAP
noise
det.
V-reg.
I-reg.
L+R
filter
L−R
filter
SAP out
filter
75 µs
de-emph.
(L−R)/SAP
switch
Matrix
dbx
de-emph. 2
dbx
wide band
dbx
spectral
dbx
de-emph. 1
LED
driver
I²C
decoder
2 _SDA
3 _SCL
1 _I²_C
GND
Wide band ²²
filter
23
Spectral ²⁰
filter
19
18
24
1