SiRX Single-Chip RF Front-End for Digital Satellite TV

Transcription

1 SiRX Single-Chip RF Front-End for Digital Satellite TV

2 Track Record of Proven Technology Key Silicon Labs Innovations Globally-compliant DAA CMOS RF synthesizer Complete embedded modem CMOS RF transceiver CMOS satellite radio tuner CMOS PA CMOS FM tuner Core Technology Digital low-if technology Minimizing digital-to-analog cross talk RF CMOS expertise Power management expertise Set-top top Box Market Success 50% ISOmodem set-top box market share Majority market share in North America 75% personal video recorders use Silicon Labs modems 8 out of the top 10 STB makers use Silicon Labs SiRX Family Evolution of key Silicon Labs innovation Leverages STB customer relationships 2

3 Introducing the SiRX Si21xx Family Industry s first fully integrated single-chip tuner, demodulator and LNB supply Complete RF-to-digital front-end solution Best-in-class performance Meets or exceeds key RF front-end requirements Ease-of-use allows customers to focus design efforts on product differentiation Enables common platform approach 3

4 Traditional Solution vs. Silicon Labs Traditional Solution Silicon Labs SiRX Si21xx Tuner Demodulator LNB Supply Multi-Chip Solution 300 mm 2 Complicated, 3-chip solution Separate tuner, demodulator and LNB supply Sourcing from multiple vendors typical Increases cost and complexity Separate tuner complicates RF design RF performance affected by external factors such as EMI and noise interference Single-Chip Solution 50 mm 2 100% CMOS single-chip solution Small 6x8 mm footprint simplifies procurement and design Easy-to-use and eliminates difficult RF design Provides consistent performance across designs 4

5 RF Made Easy Si21xx LNB RF Tuner ADC ADC Demodulator + FEC MPEG-TS Host Processor A/V External BOM LNB Supply Controller LNB Signaling (DiSEqC 2.x) I 2 C Interface I 2 C Single-chip RF-to-digital architecture reduces set-top box design time Integrated step-up supply controller for the LNB converter Power efficient Provides short circuit and over-current protection Supports two-way communication to LNB peripherals 5 LNB Supply for Antenna Power

6 LNB Supply Integration Lowers BOM Integrated LNB supply Supplies LNB with up to 18 V power using dc-dc converter External BOM powered by a 9 V or 12 V supply Short-circuit and over-current protected RF BOM Silicon Labs 18 V Si21xx LNB Supply On-Chip MPEG-TS LNB supply integration results in an inexpensive, simple design Lowers external BOM cost Software allows fine tuning of power supply voltage Configurable to support many types of antennas Supports advanced standards such as DiSEqC 2.x for two-way communication RF BOM 18 V LNB Supply External LNB Supply Traditional Solution Tuner Demod MPEG-TS 6

7 Excellent Sensitivity and Linearity Eb/No (db) Best-in-class sensitivity No distortion at high input power Silicon Labs SiRX Pin (dbm) Better sensitivity Allows reception during rain fade or cable loss Allows use of longer cables Better linearity Allows high tolerance to strong or boosted signals Competing Solution 7

8 Satellites Transmitting Low Baud Rates Eurasiasat 1 at 42º (Transponder 31) Nur TV (2.4 Mbaud) Ege TV (2.3 Mbaud) Ulusal (2.4 Mbaud) Eyilik TV (2.3 Mbaud) ACI Challenge Many free-to-air programs transmitted at low baud rates Multiple low baud rate channels closely spaced together Acquisition and channel scanning can take a very long time SiRX Solution Excellent performance, even under worst-case low-baud rate conditions Typical < 50ms channel acquisition time for high baud rates < 200ms channel acquisition for 1 MBd (competing solutions up to 1s or more!) Capable of handling > 20dB adjacent channel interference (ACI) Hardware-assisted blindscan improves channel scan time by more than 10x compared to software-based solutions GHz 8

9 Enabling Common Platform Approach Digital TV companies moving to common platform approach to accelerate time-to-market Single processor for satellite, cable and terrestrial SiRX family offers a complete RF-to-digital solution Allows customers to easily adapt their cable and terrestrial set-topbox designs to support satellite Allows OEMs to maintain one common platform for all designs Satellite (SiRX) Common Platform Cable Terrestrial Front-end MPEG-TS Common Host Processor A/V Broadband ISOmodem 9

10 Summary Highly-integrated SiRX Si21xx family is the industry s first single-chip RF front-end for DBS Tuner, demodulator and LNB supply integrated on one chip Small, 100% CMOS solution Reduces manufacturing, development and BOM costs Provides best-in-class performance Enabling consistent performance across designs Blindscan feature significantly reduces channel scan time Complete RF-to-digital solution provides big advantages Enables common platform use for multiple access media 10

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