SI4706-B20-GM - Silicon Labs

Introducing High-Performance

FM RDS Data Receiver ICs

March 2008

Silicon Labs Broadcast Audio Division

Highly successful product family

>100MU units shipped

Broad portfolio of pending and

granted patents

International presence and local

support in all major markets

Rapidly expanding portfolio of

solutions targeting digital and

analog audio broadcast markets

Broadcast Product Family

Common Applications:

Cellular Handsets

Portable Media Players

and accessories

Navigation Devices

Set-Top Boxes

XM Satellite Radios

Industry leading performance and feature sets for

broadcast solutions based on unique RF capability

Broadcast Audio Receivers and Transmitters

Satellite Radio Tuner

Satellite STB Receivers

Traffic Message Channel (TMC) system provides real-time

traffic information over FM RDS

RDS-TMC is being bundled with GPS to provide real-time

traffic information to consumers

Explosive growth in US and Europe in automotive telematics,

portable navigation devices (PNDs) and mobile GPS-enabled

devices

RDS-TMC Navigation Proliferation

c/o www.tmcforum.com

Introducing Si4706/49 RDS Data Receivers

High-performance RDS receivers

provide industry-leading sensitivity

and reliability

Results in higher confidence in the

traffic data received

Advanced RDS processing and

decode techniques raise the

performance bar

Digital low-IF architecture provides

unmatched flexibility

Smallest, most highly integrated solutions for portable and

automotive markets

Integrate the entire receiver from antenna input

to RDS output

Addressing Both Automotive and Portable Markets

** Devices shown are illustrative of target market and do not imply design wins

PND, mobile device RDS tuner

Unmatched RDS performance

Supports antenna-free enclosures

Stereo digital/analog audio out

3 x 3 x 0.55 mm 20 pin QFN

Automotive companion tuner

AEC-Q100 qualified

Rapid AF tuning and qualification

Unmatched RDS performance

4 x 4 x 0.85 mm 24 pin QFN

Si4706Si4749

Higher Quality Data Received

Traditional RDS decoder

Si4706/49 RDS DecoderSi4706/49 RDS decoder extends

acceptance region using advanced

on-chip processing

Traditional RDS decoder

pre-defined acceptance region

Greater amount of data rejected

Higher block error rate

Data is correctly interpreted

Lower block error rate

High Performance Benefits End Users

Fewer dropped connections requiring

re-synchronization and data recovery

More persistent RDS synchronization

More reliable data receivedBetter data decode reliability

Faster synchronization if lost in

variable signal environment

Reduced RDS synchronization times

Receives better data, farther from RDS

transmitter during users’ commute

Increased sensitivity in low signal

environments

BenefitFeature

Industry-Leading Sensitivity

Newest competition

(15 µVemf)

Market-leading

Si4703-B17

(12 µVemf)

Si4706/49

(8 µVemf)

The industry’s best

RDS sensitivity

Si4706 and Si4749

receive data farther

from transmitter

Si4706/49 sensitivity is

8 µVemf at 5% BLER

Nearly 2x better than

competition

Si4706/49 RF Level vs. RDS Synct ime

100

200

300

400

500

0 102030405060

RF Level ( dBuVem f)

Synctime (ms)

Fastest RDS Synchronization Time

Rapid synchronization in weak and varying signal level environments

Quicker synchronization with transmitter if signal is lost

RDS deviation = 2kHz

Consistent performance <100ms

Superior RDS Synch Persistence

Si4706/49 RDS synchronization persistence is 2x

improvement over market-leader

Si4706/49 maintain synch to 4uV EMF @ 70% BLER

Si4703-B17 maintains synch to 8uV EMF @ 30% BLER

Si4706/49 does not lose synchronization in illustration

RDS data is immediately received upon improved SNR conditions

uV EMF

RF Level vs. Decoder Err or Rate ( DER)

0.01

0.1

100

10 12 14 16 18 20 22 24 26

RF Level (dBuV EMF)

DER (%)

Si4706/49

Si4703-B17

Excellent Decoder Reliability

Decoder reduces incorrect/undecipherable RDS data

Improves TMC and RDS song meta data integrity

More accurate information leads to better user experience

Si4706/49 Unmatched Programmability

Reduces interrupts and therefore power consumption

load of host processor

Especially useful in decoding ODA information with

large groups of data

Greater than 50 times more data than competition

provides

On-chip buffer up to 25

RDS groups with

associated BLER by

block (100 blocks)

Allows error-thresholds, content-specific or

application-specific interrupts to save host power

Interrupts by block-

specific BLER

Allows host processor to post-process if user desires

User can also select interrupts by BLER level,

conserving host processor cycles

Full granularity with all

blocks and BLER

RDS block A almost never changes and block B

changes with programming content. Interrupts likely

indicate change or similarity in broadcaster or content

Interrupts on change in

block A and / or block B

BenefitFeature

Summary

Advanced RDS decode engine offers industry-leading

performance, directly benefiting end-users

Digital low-IF architecture proven industry-wide as mature,

reliable, proven

High integration and simple programming make adding

companion / data receiver easy and cost-effective