CXA2174S Datasheet, PDF (1/29 Pages) Sony Corporation – US Audio Multiplexing Decoder

US Audio Multiplexing Decoder
CXA2174S
Description
The CXA2174S is an IC designed as a decoder for
the Zenith TV Multi-channel System and also
corresponds with I²C 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 I²C BUS.
30 pin SDIP (Plastic)
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 I²C bus.
Applications
TV, VCR and other decoding systems for US audio
multiplexing TV broadcasting
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage
VCC
11
V
• Operating temperature Topr –20 to +75 °C
• Storage temperature
Tstg –65 to +150 °C
• Allowable power dissipation
PD
1.35 W
Range of Operating Supply Voltage
9 ± 0.5 V
∗ _{A license of the dbx-TV noise reduction system is}
required for the use of this device.
Pin Configuration (Top View)
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
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.
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E00815-PS