CXA2174S

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 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. 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 30 pin SDIP (Plastic) Structure Bipolar silicon monolithic IC Absolute Maximum Ratings (Ta = 25°C) 11 V Supply voltage VCC 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) 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 L...