TDA8732

INTEGRATED CIRCUITS DATA SHEET TDA8732 NICAM-728 demodulator (NIDEM) Product specification File under Integrated Circuits, IC02 April 1993 Philips Semiconductors Product specification NICAM-728 demodulator (NIDEM) FEATURES 5 V supplies for analog and digital circuitry Low cost application Improved noise behaviour Limiting amplifier for QPSK input Suitable with PAL B, G and I NICAM-728 systems. APPLICATIONS NICAM-728 systems. GENERAL DESCRIPTION TDA8732 The NIDEM is a dedicated device providing a DQPSK (Differential Quadrature Phase Shift Keying) demodulator for a NICAM-728 system. The device interfaces with NICAM-728 decoders and provides data synchronized to a 728 kHz clock (either supplied externally or by the on-board clock). The device consists of a costas loop quadrature demodulator, a bit-rate clock recovery and differential decoder with parallel-to-serial conversion. The Voltage Controlled Oscillator (VCO) used in the costas loop is achieved with a single-pin crystal oscillator. A second single-pin crystal oscillator with a divider chain provides signals at 5.824 MHz and at 728 kHz. The NIDEM is suitable for PAL B and G (carrier oscillator crystal at 11.7 MHz) and PAL I (carrier oscillator crystal at 13.104 MHz). QUICK REFERENCE DATA Measured over full voltage and temperature ranges. SYMBOL VCCA VCCD VCCA ICCA ICCD V3 RI CI fCAROSC fXTAL PARAMETER analog supply voltage digital supply voltage analog supply voltage analog supply current digital supply c...