SN761672ADA

TV / VCR调谐器IC TV/VCR TUNER IC

description

SN761672A 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, a 30-V output tuning amplifier, and four NPN band switch drivers. It is available in a small package  outline. The 15-bit programmable counter and reference divider is controlled by I2C bus  protocol. Tuning step frequency is selectable by this reference-divider ratio for a 4-MHz  crystal oscillator.

 Single Chip Mixer/Oscillator and Synthesizer

 VHF-L, VHF-H, UHF 3-Band Local Oscillator

 I2C Bus Protocol

 Bidirectional Data Transmission

 30-V Tuning Voltage Output

 4-Channel NPN Type Band Switch Drivers

 Programmable Reference Divider Ratio 512, 640 or 1024

 5-V Power Supply

 32-Pin TSSOP Package