I2S

FLASH

Interface

LOUT

ROUT

RFREF

VHFI

ADC

DAC

DCLK

DFS

DOUT

SCLK

SSB

MISO

MOSI

CLK

Gen

RDS

Control

LDOs

Si4688-A10

AGC

ADC

DAC

DSP

LNA

VHFSW

VHF SW

Si4688-A10

Single-Chip, FM/HD/DAB/DAB+ Radio Receiver

Description

The Si4688 single-chip digital receiver is one member of a

family of 100% CMOS digital radio broadcast receiver ICs

from Silicon Labs. The Si468x family offers a complete and

cost-effective digital radio solution integrating the RF tuner,

baseband, and audio processing on a single die. The high

level of integration provides significant customer benefits

compared to traditional digital radio solutions, including a

reduction in system implementation complexity, validation

and testing, and improved reliability and manufacturability.

The Si4688 is compatible with the iBiquity Digital and

NRSC-5 standards for FM In-Band-On-Channel (IBOC)

digital radio broadcasting, integrating digital channel

demodulation and decoding functions, along with audio

decoding and IBOC analog-digital blend. The Si4688

supports IBOC multicasting, as well as the full-range of HD

Radio data services, such as PSD, Artist Experience,

iTunes® Tagging, Bookmark and real-time Traffic, with the

appropriate external decoders.

The Si4688 also offers VHF Band III (168–240 MHz)

reception capability and is fully compliant with ETSI EN 300

401 and ETSI TS 102 563. The Si4688 delivers DAB and

DAB+ via an integrated source decoder that supports both

MPEG Audio Layer 2 (DAB) and HE-AAC V2 (DAB+). The

Si4688 supports data services such as Dynamic Labels,

Intellitext, Electronic Program Guide (EPG), Slideshow,

and Journaline® with the appropriate external decoders.

For more information, visit the Si468x Digital Radio

Receivers web page.

Features

Applications