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SN761662 - DTV TUNER IC

General Description

The SN761662 is a low-phase-noise synthesized tuner IC designed for digital TV tuning systems.

The circuit consists of a PLL synthesizer, three-band local oscillator and mixer, 30-V output tuning amplifier, four NPN band-switch drivers, and is available in a small-outline package.

Key Features

  • Low-Phase-Noise Mixer/Oscillator and PLL Synthesizer.
  • VHF-L, VHF-H, UHF Three-Band Local Oscillator.
  • I2C Bus Protocol (Bidirectional Data Transmission).
  • 30-V Tuning Voltage Output.
  • Four NPN-Type Band-Switch Drivers.
  • One Auxiliary-Port, Five-Level ADC.
  • RF AGC Detector Circuit.
  • Crystal Oscillator Output.
  • Programmable Reference Divider Ratio (24/28/50/64/80/128).
  • Standby Mode.
  • 5-V Power Supply.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.ti.com FEATURES • Low-Phase-Noise Mixer/Oscillator and PLL Synthesizer • VHF-L, VHF-H, UHF Three-Band Local Oscillator • I2C Bus Protocol (Bidirectional Data Transmission) • 30-V Tuning Voltage Output • Four NPN-Type Band-Switch Drivers • One Auxiliary-Port, Five-Level ADC • RF AGC Detector Circuit • Crystal Oscillator Output • Programmable Reference Divider Ratio (24/28/50/64/80/128) • Standby Mode • 5-V Power Supply • 38-Pin TSSOP Package APPLICATIONS • Digital TV • Digital CATV • Set-Top Box DESCRIPTION The SN761662 is a low-phase-noise synthesized tuner IC designed for digital TV tuning systems. The circuit consists of a PLL synthesizer, three-band local oscillator and mixer, 30-V output tuning amplifier, four NPN band-switch drivers, and is available in a small-outline package.