US Audio Multiplexing Decoder
The CXA2134Q 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.
• Alignment-free VCO and filter
• Audio multiplexing decoder
dbx noise reduction decoder
— Two external inputs
— Bass control
— Treble control
— Volume control
are all included in a single chip. Almost any soft of
signal processing is possible through this IC.
• Input level, separation adjustments and each mode
control are possible through I2C bus.
48 pin QFP (Plastic)
TV, VCR and other decoding systems for US audio
multiplexing TV broadcasting
Bipolar silicon monolithic IC
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage
• Operating temperature Topr –20 to +75
• Storage temperature Tstg –65 to +150
• Allowable power dissipation
Range of Operating Supply Voltage
9 ± 0.5
∗ 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.