Introducing the Si844x Digital Isolator March 2006

Key Market Segments Broadcast Power Solutions MCU STB Tuners FM Tuners Controllers Isolators Broadcast STB Tuners FM Tuners Wireline Voice Solutions  ProSLIC  Voice DAA Timing Solutions Modem Solutions  ISOmodem  DAA Wireless Aero Transceivers AeroFONE Power Amplifiers RF Synthesizer MCU 8-bit Mixed-Signal MCUs

Diverse Isolator Market Digital isolators address expanding applications More than 3 billion isolator units sold by 2010 500 1000 1500 2000 2500 3000 3500 M Units 2005 2006 2007 2008 2009 2010 Plasma TV Isolated Data Acq. Motor Control Electronic Ballast Isolated DC-DC AC-DC Supplies CAGR=17.1% Isolator TAM by Application

Isolator Applications Example circuit applications: Isolation Level shifting Ground loop elimination Example end applications: AC-DC and DC-DC switching supplies Motor Control Systems Isolated analog data acquisition Plasma TVs Ethernet/CAN Networks Isolated point-to-point communications UPS systems Operator interface controls Digitally Controlled Power Level Shifting & Ground Loop Elimination Isolated Analog Sampling

Traditional Isolator Limitations Opto-couplers Performance degrades at high temp Usually only singles per package Limited data rate (most 10 Mbps or less) Giant magneto-resistive Limited to about 100 Mbps Random startup states Pulse transformers Bulky Expensive in cost and real estate No dc correctness Galvanic isolators Limited to about 80 Mbps Expensive

Introducing the Si844x Quad Digital Isolators Highest integrated 2.5 kV 4-channel isolator 1/3 the size of opto-coupler solutions 50% lower bill-of-material costs Fastest throughput digital isolator 150 Mbps max throughput 50% faster than existing digital isolators Lowest power consumption at high speeds 12 mA per channel at 100 Mbps Substantially lower than opto-coupler solutions Highest temperature operation 125°C at 100Mbps, 100°C at 150 Mbps Easy-to-use single-chip solution Specification compliant with UL, CSA and VDE electrical safety standards Stable operating characteristics over temperature, supply voltage and time Pin compatible with existing industry solutions

Leveraging World-class RF Expertise Based on Silicon Laboratories’ patented RF technology Implements RF modulation demodulation scheme to transfer data

Si844x Reduces Board Complexity Higher integration Up to four channels per part No external components Easy-to-use Insignificant sensitivity to temperature, supply voltage and aging Simplifies board layout HCPL - 0631 0601 Data Converter Opto-coupler Solution 17 mm 2 5 m C R 6 7 D 4 8 3 1 Agilent Recommended Interface Circuit Si 8401 Data Converter Silicon Laboratories Solution 16 mm 1 m C 2

Industry’s Fastest, Lowest Power Isolator Propagation Delay 5 V Propagation Delay 3.3 V Part mW/ch MHz mW/MHz Si844x 12 150 0.1 Competitor A 155 90 1.7 Opto-coupler 1 160 40 4.0 Opto-coupler 2 6 6.7 Opto-coupler 3 10 9.0 Opto-coupler 4 11 13.6 Opto-coupler 5 1 40.0 Opto-coupler 6 55 550.0

Summary The Si844x delivers the highest integration, fastest throughput, lowest power 2.5 kV 4-channel isolator Leverages RF expertise to deliver innovative isolator technology The easiest to use single-chip solution targeting isolation, level shifting and ground loop elimination applications

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