Low-power, High-performance AM/FM HD Radio™

MFG Part #:


Part #:
Short Lead Time
RoHS Status:
This item is currently not available for purchase online.

Please call us at 877-466-9722 to request a quote.
Ask a Question
Call Me
Email This Page

Product Information

Back to top
The Si4613 HD Radio™ radio processor provides significant advances in size, power consumption, and performance to enable HD Radio reception in automotive infotainment systems and car radios as well as in high-end audio/video receivers and pro-audio systems. It is designed to work with the high-performance automotive Si476x and Si479x families of AM/FM radio tuners.

The Si4613 HD Radio processor supports the iBiquity and NRSC-5 standards for FM In-Band-On-Channel (IBOC) and AM IBOC digital radio broadcasting. The processors support Station Information Service (SIS), Service Information Guide (SIG), Program Service Data (PSD), IBOC multicasting, and HD Radio digital audio.

The Si4613 implements a version of iBiquity’s Cayenne HD Radio core, optimized for low power, cost, and footprint. It features an extremely efficient Viterbi decoder, thereby eliminating the need for an external SRAM memory module. The Si4613 HD Radio core utilizes iBiquity’s proprietary HDC codec to decode the HD radio signal and directs the HD radio audio output to other system ICs through an I2S digital audio interface. The Si4613 enables many additional features, such as real-time traffic, iTunes Tagging and Artist Experience by providing the Advanced Application Services (AAS) payload to the external application processor.

The Si4613 HD Radio core was co-developed by Silicon Labs and iBiquity and is the most advanced power-efficient HD Radio processing core available today.

Symmetry Electronics is an authorized Silicon Labs distributor.


Back to top
AM/FM HD Radio channel decoder (Si4613)
Complete on-chip HDC audio source decoder
FM HD1, HD2, HD3 multicast support
Station Information Service (SIS) support
Program Service Data (PSD)
Advanced Application Services (AAS) Payload for data applications
No external RAM required for channel decoding
Flash memory interface for application program load
On-chip crystal oscillator
Reference clock input
SPI, I2C control interfaces
QFN 48-pin, 7x7x0.85 mm
Pb-free/RoHS compliant
AEC-Q100 qualified


Back to top

Previously Viewed Products