Many of today's vehicles feature sophisticated infotainment systems with multiple tuner ICs and antennas to support maximal ratio combining (MRC) for digital radio, FM phase diversity reception, Radio Data System (RDS) info-navigation data, and digital radio standards such as HD Radio and Digital Audio Broadcast (DAB). The Si479xx and Si46xx portfolio have been designed to address the global demand for advanced car radio technology supporting all worldwide broadcast radio bands.
Leveraging Silicon Labs' patented low-IF digital architecture, the Si479xx family delivers superior RF performance and interference rejection for car radio applications. The proven RF CMOS design, combined with comprehensive AM/FM firmware, sets a higher bar for key automotive radio metrics, such as sensitivity in weak signal environments, selectivity in the presence of blockers, and immunity to multipath fading and distortion. An integrated audio subsystem can synchronise, process and distribute digital and audio signals in the automotive head-unit. To reduce time-to-market for developers, Silicon Labs is offering four-channel and six-channel audio post-processing reference designs. In addition, Silicon Labs provides a software development kit (SDK) that simplifies porting of third-party algorithms to the audio subsystem.
The Si462x data receiver family offers a comprehensive, cost-effective platform that supports analogue and digital radio by integrating a multiband RF tuner, demodulator and channel decoder on a single die. The Si462x receivers provide significant advances in size, power consumption and performance over all other solutions in the market to enable HD Radio and DAB/DAB+ data services in automotive infotainment systems and car radios. The Si462x family's high level of single-chip integration simplifies infotainment system design cycles.
The Si461x digital radio coprocessors provide channel demodulation and source decoding of HD Radio and DAB/DAB+ digital radio and minimise the system bill of materials (BOM) by eliminating the external RAM memory module for channel decoding typically required by competing digital radio processors. All Si461x/2x IC products are HD Radio certified by iBiquity, giving automotive OEMs and Tier 1 suppliers the assurance that these devices have gone through rigorous testing and meet or exceed iBiquity's high-performance digital radio requirements.