Silicon Labs has expanded its Si468x digital radio IC family to include new options for AM and AM HD Radio. The Si468x ICs are the most cost-effective single-chip digital radio receivers available that support worldwide radio reception and are certified for the Digital Radio Tick Mark and AM/FM HD Radio. The industry’s first monolithic, CMOS-based antenna-input-to-audio-output digital radio ICs, the Si468x receivers are suitable for portable and consumer electronics products supporting digital radio standards.
The Si468x family features a low-power, multi-band receiver supporting global analog and digital radio standards including AM, FM, FM RDS, AM/FM HD Radio, DAB and DAB+. The Si468x family is one of a few select receiver technologies to be approved by Digital Radio UK (DRUK) for the Digital Tick Mark. This means that consumers who buy Si468x-based DAB radios can be assured of the quality of their radios and their readiness for digital radio reception. The Si468x ICs supporting AM/FM HD Radio reception are pre-certified by iBiquity, the sole developer and licenser of HD Radio technology, enabling designers to develop and certify their HD Radio products in the shortest timeframe possible.
The Si468x receiver family offers a complete, cost-effective digital radio solution integrating the RF tuner, baseband and audio processing circuitry on a single die. The Si468x receivers require a minimal bill of materials (BOM) and consume very low power, making the ICs ideal for the portable and mainstream consumer electronics markets. The family’s high level of integration provides significant benefits compared to traditional radio solutions including reduced system complexity, easier validation and testing, and improved reliability and manufacturability.
Leveraging Silicon Labs’ proven digital low-IF receiver architecture, the Si468x receivers deliver superior RF performance compared to existing digital radio solutions. The Si468x receivers support auto-calibrated digital tuning and AM/FM seek functionality based on multiple signal quality and band parameters, and they provide flexible, advanced audio processing including configurable AM/FM soft mute, FM stereo-mono blend and AM/FM hi-cut filtering.