U4280BM

` Frequency range up to 150 MHz
` Pre-amplifier for AM and FM
` Fine tuning steps:  AM 1kHz
                                  FM  2 kHz
` Two programmable 16-bit divider, adjustable from 2 to 65535
` Reference oscillator up to 15 MHz
` 5 programmable switching outputs, 4 are open drain outputs up to 15 V
` Phase detector with separate outputs for AM and FM
` Controlled via I²C bus

The U4280BM is an integrated circuit in BICMOS technology for frequency synthesizer. It performs all the functions of a PLL radio tuning system and is controlled by I²C bus. The U4280BM is designed for all frequency synthesizer applications of radio receivers, as well as RDS (Radio Data System) applications.