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CXA2174 Datasheet

  • CXA2174

  • US Audio Multiplexing Decoder

  • 29頁

  • SONY   SONY

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CXA2174S
US Audio Multiplexing Decoder
Description
The CXA2174S 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
鈥?/div>
Alignment-free VCO and filter
鈥?/div>
Audio multiplexing decoder
dbx noise reduction decoder
sound processor
鈥?One external input
鈥?Volume control
are all included in a single chip. Almost any sort of
signal processing is possible through this IC.
鈥?/div>
Input level, separation adjustments and each mode
control are possible through I
2
C bus.
Applications
TV, VCR and other decoding systems for US audio
multiplexing TV broadcasting
30 pin SDIP (Plastic)
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings
(Ta = 25擄C)
11
V
鈥?/div>
Supply voltage
V
CC
鈥?/div>
Operating temperature
Topr
鈥?0 to +75 擄C
鈥?/div>
Storage temperature
Tstg 鈥?5 to +150 擄C
鈥?/div>
Allowable power dissipation
P
D
1.35
W
Range of Operating Supply Voltage
9 鹵 0.5
V
鈭?/div>
A license of the dbx-TV noise reduction system is
required for the use of this device.
Pin Configuration
(Top View)
NOISETC
VCAWGT
SAPOUT
SUBOUT
VCATC
AUX-R
VEOUT
VEWGT
VCAIN
SAPIN
AUX-L
VETC
STIN
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
SDA
LSOUT-R
PCINT1
MAININ
PLINT
GND
VGR
SCL
LSOUT-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.
鈥?鈥?/div>
COMPIN
PCINT2
SAPTC
IREF
V
CC
E00815-PS

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