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SN761642 - DIGITAL TV TUNER IC

General Description

The SN761642 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, and RF AGC detector circuit.

The SN761642 is available in a small-outline package.

Key Features

  • 1.
  • Integrated Mixer/Oscillator/PLL.
  • VHF-L, VHF-H, UHF 3-Band Local Oscillator.
  • RF AGC Detector Circuit.
  • I2C Bus Protocol Bidirectional Data Transmission.
  • High-Voltage Tuning Voltage Output.
  • Four NPN-Type Band Switch Drivers.
  • One Auxiliary Port/5-Level ADC.
  • Crystal Oscillator Output.
  • Programmable Reference Divider Ratio (24/28/32/64/80/128).
  • Selectable Digital IFOUT and Analog IFOUT.
  • Standby Mode.

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Full PDF Text Transcription (Reference)

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SN761642 www.ti.com.................................................................................................................................................................................................