1. Introducing the Si844x Digital Isolator
March 2006

2. 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

3. 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

4. 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

5. 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

6. 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

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

8. 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

9. 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

10. 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