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SN761662

Texas Instruments
Part Number SN761662
Manufacturer Texas Instruments
Description DTV TUNER IC
Published Sep 4, 2019
Detailed Description www.ti.com FEATURES • Low-Phase-Noise Mixer/Oscillator and PLL Synthesizer • VHF-L, VHF-H, UHF Three-Band Local Oscillat...
Datasheet PDF File SN761662 PDF File

SN761662
SN761662

Overview
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.
A 15-bit programmable counter and reference divider are controlled by I2C bus protocol.
Tuning step frequency is selectable by this reference divider ratio for a crystal oscillator.
SN761662 DTV TUNER ...


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