SI4731

The SI4731 is a highly integrated, digital CMOS AM/FM radio receiver IC that offers a complete radio solution with minimum external components. It supports worldwide FM bands (76-108 MHz) and AM/MW/SW bands (520-1710 kHz). The SI4731 is designed to deliver high performance and high quality audio output with advanced features like advanced seek, auto-calibration, frequency synthesizer, and adaptive noise cancelation.The IC incorporates a digital signal processing core that allows for a wide range of radio functionality, including digital tuning, automatic gain control, and IF bandwidth control. It also features an integrated RDS/RBDS decoder for displaying station and song information. The SI4731 supports a variety of input and output configurations, including an I2C interface for communication with external microcontrollers and audio outputs for connecting to external amplifiers or headphones.

主要特徵

• Programmable FM/AM/SW/LW radio receiver
• Digital tuning with seek/sweep capabilities
• Automatic gain control and dynamic noise reduction
• Stereo output with adjustable volume control
• Integrated IF filtering and frequency synthesizer
• Low power consumption and power-down modes

應用

• AM/FM radio receivers
• Portable radios
• Automotive infotainment systems
• Emergency alert systems
• Two-way radios
• Home audio systems
• Weather radios
• Public safety communication devices
• Industrial control systems
• Telemetry equipment