CXA2104S
US Audio Multiplexing Decoder
Description
The CXA2104S is an IC designed as a decoder for
the Zenith TV Multi-channel System and also
corresponds with I
2
C BUS. Functions include stereo
demodulation, SAP (Separate Audio Program)
demodulation, dbx noise reduction. Various kinds of
filters are built in while adjustment and mode control
are all executed through I
2
C BUS.
Features
•
Adjustment free of VCO and filter.
•
Audio multiplexing decoder and dbx noise
reduction decoder are all included in a single chip.
Almost any sort of signal processing is possible
through this IC.
•
All adjustments are possible through I
2
C BUS to
allow for automatic adjustment.
•
Various built-in filter circuits greatly reduce external
parts.
•
There is an additional SAP output.
Standard I/O Level
•
Input level
COMPIN (Pin 11)
30 pin SDIP (Plastic)
Absolute Maximum Ratings
(Ta = 25°C)
•
Supply voltage
V
CC
11
•
Operating temperature Topr
•
Storage temperature
Tstg
•
Allowable power dissipation
P
D
–20 to +75
–65 to +150
1.35
V
°C
°C
W
Range of Operating Supply Voltage
9 ± 0.5
V
Applications
TV, VCR and other decoding systems for US audio
multiplexing TV broadcasting
100mVrms
245mVrms (Selected by INSW)
490mVrms
∗
A license of the dbx-TV noise reduction system is
required for the use of this device.
NOISETC
SAPOUT
VCATC
VEOUT
VEWGT
SUBOUT
Structure
Bipolar silicon monolithic IC
•
Output level
TVOUT-L/R (Pins 2 and 1)
Pin Configuration
(Top View)
VCAWGT
VCAIN
SAPIN
SOUT
VETC
STIN
NC
VE
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
MAINOUT
DGND
TVOUT-R
PCINT1
MAININ
PLINT
GND
SDA
VGR
TVOUT-L
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
COMPIN
PCINT2
SAPTC
SCL
IREF
V
CC
E97726B96-PS
SONY [ SONY CORPORATION ]
