SN761678 Overview
The SN761678 is a single-chip, synthesized tuner IC designed for TV/VCR tuning systems. The circuit consists of a PLL synthesizer, 3-band local oscillators and mixer, 30-V output tuning amplifier, four NPN band switch drivers, and is available in a small package outline. Fifteen-bit programmable counter and reference divider is controlled by I2C bus protocol.