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U4468B - Quasi-split Sound Circuit and AM Demodulator IC

Description

The U4468B is an integrated bipolar circuit for full multistandard sound IF signal processing in TV/VTR and multimedia applications.

It supplies AM signals as well as FM/NICAM sound IF signals and thus allows the design of a universal sound IF module for various applications.

Features

  • 5-V Supply Voltage.
  • Gain-controlled 3-stage Wide-band IF Amplifier.
  • Active Carrier Generation by FPLL Principle (Frequency-Phase-Locked-Loop) for True Quadrature Demodulation.
  • Complete Alignment-free AM Demodulator.
  • Switchable Amplitude Detector for Gain Control, which Operates as a Peak Detector for FM Sound and as a Mean Level Detector for AM Sound.

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Features • 5-V Supply Voltage • Gain-controlled 3-stage Wide-band IF Amplifier • Active Carrier Generation by FPLL Principle (Frequency-Phase-Locked-Loop) for True Quadrature Demodulation • Complete Alignment-free AM Demodulator • Switchable Amplitude Detector for Gain Control, which Operates as a Peak Detector for FM Sound and as a Mean Level Detector for AM Sound Description The U4468B is an integrated bipolar circuit for full multistandard sound IF signal processing in TV/VTR and multimedia applications. It supplies AM signals as well as FM/NICAM sound IF signals and thus allows the design of a universal sound IF module for various applications. Quasi-split Sound Circuit and AM Demodulator IC U4468B Figure 1.
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