(China (Mainland))
Product Summary
The TDA9874APS is a single-chip Digital TV Sound Demodulator/Decoder (DTVSD) for analog and digital multi-channel sound systems in TV/VCR sets and satellite receivers.
Parametrics
TDA9874APS absolute maximum rating: (1)VDDx DC supply voltage: -0.5 +6.5 V; (2)DVDDx voltage differences between two VDDx pins: - 550 mV; (3)IIK DC input clamp diode current Vi < -0.5 V or Vi > VDD + 0.5 V: ±10 mA; (4)IOK DC output clamp diode current output type 4 mA Vo < -0.5 V or Vo > VDD + 0.5 V: ±20 mA; (5)IO DC output source or sink current output type: 4 mA; (6)-0.5 V < VO < VDDx + 0.5 V: ±20 mA; (7)IDDD, ISSD DC VDDD or VSSD current per digital supply pin: ±96 mA; (8)IDDA, ISSA DC VDDA or VSSA current per analog supply pin: ±50 mA; (9)Ilu(prot) latch-up protection current: 100 mA; (10)P/out power dissipation per output: 100 mW; (11)Ptot total power dissipation: 0.75 W; (12)Tstg storage temperature: -55 +125 ℃; (13)Tamb ambient temperature: -20 +70 ℃; (14)Ves electrostatic handling: 2000 V.
Features
TDA9874APS features: (1)Sound IF (SIF) input switch; (2)SIF AGC with 24 dB control range; (3)Switchable 10 dB SIF input attenuator; (4)SIF 8-bit Analog-to-Digital Converter (ADC); (5)Easy TV standard programming option; (6)Differential Quadrature Phase Shift Keying (DQPSK)demodulation for different standards, simultaneously with 1-channel FM demodulation; (7)NICAM decoding (B/G, D/K, I and L standard); (8)2-carrier multi-standard FM demodulation (B/G, D/K and M standard); (9)Single carrier high deviation FM mono demodulation mode; (10)Decoding for three analog multi-channel systems (A2) and satellite sound; (11)Adaptive de-emphasis for satellite; (12)Programmable identification (B/G, D/K and M standard) and different identification times; (13)FM pilot carrier presence detector; (14)Optional AM demodulation for system L, simultaneously with NICAM.
Diagrams
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