U4280BM Overview
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 device is designed for all frequency synthesizer applications of radio receivers, as well as RDS (Radio Data System) applications.
U4280BM Key Features
- BUS interface Shift register Latch Phase detector Current sources Status 14 15 13 12 AMOSC Preamplifier AM / FM- switch
- Divider Analog outputs 16 PDFM PDAM PDFMO PDAMO Oscillator R
- Divider 5 SWO1 SWO2 SWO3 AM/FM 6 7 8 9