GENERAL DESCRIPTION
●The TDA9874H is a single-chip Digital TV Sound Demodulator/Decoder (DTVSD1) for analog and digital multi-channel sound systems in TV/VCR sets and satellite receivers.
●FEATURES
●• SIF input switch e.g. to select between terrestrial TV SIF and SAT SIF sources
●• SIF AGC with 21 dB control range
●• SIF 8-bit Analog-to-Digital Converter (ADC)
●• DQPSK demodulation for different standards, simultaneously with 1-channel FM demodulation
●• NICAM decoding (B/G, I and L standard)
●• Two-carrier multi-standard FM demodulation (B/G, D/K and M standard)
●• Decoding for three analog multi-channel systems (A2, A2+ and A2
●) and satellite sound
●• Adaptive de-emphasis for satellite
●• Programmable identification (B/G, D/K and M standard) and different identification times
●• Optional AM demodulation for system L, simultaneously with NICAM
●• Monitor selection for FM/AM demodulator outputs and FM and NICAM signals
●• Digital crossbar switch
●• I2S serial audio output with matrix, level adjust and mute
●• Dual audio Digital-to-Analog Converter (DAC) from digital crossbar switch to analog crossbar switch, bandwidth 15 kHz
●• Analog crossbar switch with inputs for mono and stereo
●• Output selection of mono, stereo, dual, dual A or dual B
●• 20 kHz bandwidth for analog path
●• Standby mode.
