• Supports worldwide FM (64–108 MHz), AM (520–1720 kHz), shortwave (2.3–26.1 MHz), longwave (153–279 kHz), and weather bands (162.4–162.55 kHz).
• Includes advanced AM/FM seek tuning, adaptive noise suppression, and programmable audio characteristics.
• Requires only two external components and supports PCB trace/integrated antenna for FM.
• Offers digital stereo modulation/demodulation and programmable transmit level.
• Compliant with Pb-free and RoHS standards.

• Suitable for cellular handsets, portable media players, consumer electronics, navigation devices, satellite radios, and AM/FM radios.

The Si47xx family by Silicon Laboratories is a highly integrated broadcast audio solution leveraging digital integration and CMOS technology. It supports FM transmission and AM, FM, shortwave, longwave, and weather band reception. The solution offers superior RF performance and interference rejection, utilizing digital signal processing for optimal sound quality. The high integration level simplifies production testing and reduces development time.

• First AM/FM digital CMOS solution family with the smallest FM transceiver footprint.
• Supports small integrated antennas and offers multi-band support for AM/FM/SW/LW and WB.
• Includes RDS and RBDS support for data transmission like station identification and song titles.

• Si4702/03: FM receiver with RDS support.
• Si4710/11/12/13: FM transmitter with RDS and Receive Power Scan.
• Si4730/31: AM/FM receiver with RDS support.
• Si4734/35: AM/FM/shortwave/longwave receiver with RDS support.
• Si4707/36/37/38/39: AM/FM/weather band receiver with RDS and SAME support.
• Si4720/21: FM transceiver with digital audio compression and RDS support.

The Si47xx products are fully integrated broadcast audio ICs requiring minimal external components and board space. They offer excellent selectivity and sensitivity, reducing interference and enhancing reception. The digital architecture provides superior sound quality and unmatched performance compared to analog solutions.

The Si47xx family is easy to design and manufacture, requiring no factory alignment and minimal hardware components. It supports a wide range of antenna inputs and includes a full reference board for evaluation and design.