The SN761683B is a synthesized tuner IC designed for TV tuning systems. The circuit consists of a phase-locked loop (PLL) synthesizer, three-band local oscillator and mixer, 30-V output tuning amplifier, and four NPN band-switch drivers, and is available in a small-outline package. A 15-bit programmable counter and reference divider are controlled by inter-integrated circuit (I2C) bus protocol.
Single-Chip Mixer/Oscillator and Phase-Locked Loop (PLL) Synthesizer
Three-Band Local Oscillator and Mixer
Inter-Integrated Circuit (I2C) Bus Protocol (Bidirectional Data Transmission)
30-V Tuning-Voltage Output
Four NPN-Type Band-Switch (BS) Drivers
Programmable Reference Divider Ratio (512, 640, or 1024)
