
– 1 –
CXA2164Q
48 pin QFP (Plastic)
E00X21
US Audio Multiplexing Decoder
Description
The CXA2164Q 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, and sound
processor. Various kinds of filters are built in this IC.
Adjustment, mode control and sound processor
control are all executed through I
2
C BUS.
Features
Alignment-free VCO and filter
Audio multiplexing decoder,
dbx noise reduction decoder,
sound processor
— One external input
— Volume control
are all included in a single chip.
Almost any sort of signal processing is possible
through this IC.
Input level, separation adjustments and each mode
control are possible through I
2
C BUS.
Absolute Maximum Ratings
(Ta = 25°C)
Supply voltage
Operating temperature
Storage temperature
Allowable power dissipation
V
CC
Topr
Tstg
11
V
–20 to +75
–65 to +150
°C
°C
P
D
0.6
W
Range of Operating Supply Voltage
9 ± 0.5
V
Applications
TV, VCR and other decoding systems for US audio
multiplexing TV broadcasting
Structure
Bipolar silicon monolithic IC
A license of the dbx-TV noise reduction system is
required for the use of this device.
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.
2
3
4
5
6
7
8
9
10 11 12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
40
39
38
37
36 35 34
31
32
33
41
42
43
44
45
46
47
48
1
SDA
S
D
M
N
N
N
C
N
P
P
V
V
V
V
V
N
N
N
V
S
N
S
LSOUT-L
LSOUT-R
NC
AUX-L
NC
NC
NC
AUX-R
NC
VCAWGT
NC
VGR
NC
GND
SAPTC
V
CC
SUBOUT
STIN
M
P
IREF
NC
NOISETC
NC
NC
Pin Configuration
(Top View)