Silicon Labs Introduces ISOpro Family With More Than 70 Low Power, High Performance Digital Isolators

ISOpro Family Offers Industry`s First 6-channel Isolator, Highest Data Rates and
Bidirectional Solutions for I2C, SMBus and PMBus Applications
AUSTIN, Texas--(Business Wire)--
Silicon Laboratories Inc. (Nasdaq: SLAB), a leader in high-performance,
analog-intensive, mixed-signal ICs, today introduced the Si84xx ISOpro digital
isolator family, the industry`s first to support as many as six unidirectional
isolation channels capable of data rates up to 150 Mbps. Offering
space-efficient packaging options, a choice of isolation ratings up to 2.5 kVRMS
and the industry`s most highly integrated I2C isolators, the ISOpro family
delivers unsurpassed system design flexibility for use in applications such as
power supplies, motor control systems, hybrid electric vehicles, industrial
networking, medical and consumer products.

Building on Silicon Labs` patented CMOS-based isolation technology, the ISOpro
family offers flexible solutions to simplify isolation design challenges, with
unprecedented performance and best-in-class reliability:

* Support for the highest data rate in the industry at 150 Mbps across the
widest temperature range: -40 to +125 °C, making the devices suitable in a wide
variety of industrial applications.
* Jitter performance of less than 250 ps (peak) is more than two times lower
than competitive offerings. Low jitter is critical to enabling robust and
reliable performance essential for minimizing data transmission errors and
bit-error-rates (BERs).
* Industry-leading electro-static discharge (ESD) performance of 4 kV human body
model (HBM), 2 kV charged device model (CDM) and 400 V machine model (MM) to
enable the highest reliability in harsh application environments.
* Over 25 kV/us of common mode transient immunity (CMTI) and up to 50 V/m of
electric field immunity to provide robust performance and safe operation in
applications such as switch mode power supplies, motor control and industrial
networking.

For systems with bidirectional communications ports, such as Power over Ethernet
(PoE) power sourcing equipment (PSE), switch mode power supplies (SMPS) and
isolated SMBus or PMBus interfaces, the ISOpro family includes single-chip,
I2C-compatible isolators. The Si8400 provides bidirectional isolated channels on
both the serial data (SDA) and serial clock (SCL) lines, combining the I2C
transmit and receive lines to reduce BOM cost and complexity. The Si8405 offers
two additional independent unidirectional channels for system signals such as a
reset or interrupt, eliminating ten or more discrete components and the need for
additional isolators on the PCB. In addition, the Si8400 and Si8405 support bus
speeds of up to 1.7 Mbps, nearly twice as fast the competition, and I2C clock
stretching to simplify the design task of matching bus speeds.

Efficiency continues to be a critical consideration for designers when
estimating their power budgets. With typical power consumption of less than 1.7
mA at 10 Mbps and less than 4 mA at 100 Mbps, the ISOpro family offers up to
four times lower power consumption than competitive solutions. In addition, the
devices feature an optional 200 μA energy-efficient "sleep mode" to reduce
quiescent power by more than 3 times over the closest competitor. The Si84xx
also features typical propagation delays of less than 10 ns that are 65 percent
lower than optocoupler-based solutions.Low propagation delays enable higher
bandwidths in closed loop systems and higher data rates in communication links.

"Isolators are a critical safety component in many switch mode power supplies,
hybrid electric vehicles, lighting, motor control, communications and other
power subsystems.Silicon Labs is proud to offer best-in-class isolator
technology to meet all the isolation design challenges of these systems," said
Dave Bresemann, vice president of Silicon Labs. "With 70 new ISOpro digital
isolator products, Silicon Labs gives system designers maximum flexibility in
their design without sacrificing performance."

Pricing and Availability

Samples of the ISOpro Si84xx one- and two-channel devices are available in
narrow body (NB) SOIC-8 packages; the 3, 4, 5 and 6-channel devices are
available in NB SOIC-16 and wide body (WB) SOIC-16 packages. Pricing for the
Si84xx devices starts at $0.59 in high volume, and full production is scheduled
for Q2 2009. To order, please visit www.silabs.com/power.

Silicon Laboratories Inc.

Silicon Laboratories is an industry leader in the innovation of
high-performance, analog-intensive, mixed-signal ICs.Developed by a world-class
engineering team with unsurpassed expertise in mixed-signal design, Silicon
Labs` diverse portfolio of highly-integrated, easy-to-use products offers
customers significant advantages in performance, size and power
consumption.These patented solutions serve a broad set of markets and
applications including consumer, communications, computing, industrial and
automotive.

Headquartered in Austin, TX, Silicon Labs is a global enterprise with
operations, sales and design activities worldwide.The company is committed to
contributing to our customers` success by recruiting the highest quality talent
to create industry-changing innovations. For more information about Silicon
Labs, please visit www.silabs.com.

Cautionary Language

This press release may contain forward-looking statements based on Silicon
Laboratories` current expectations. These forward-looking statements involve
risks and uncertainties. A number of important factors could cause actual
results to differ materially from those in the forward-looking statements. For a
discussion of factors that could impact Silicon Laboratories' financial results
and cause actual results to differ materially from those in the forward-looking
statements, please refer to Silicon Laboratories` filings with the SEC. Silicon
Laboratories disclaims any intention or obligation to update or revise any
forward-looking statements, whether as a result of new information, future
events or otherwise.

Note to editors: Si84xx product family, Silicon Laboratories, Silicon Labs, the
"S" symbol, the Silicon Laboratories logo, and the Silicon Labs logo are
trademarks of Silicon Laboratories Inc.All other product names noted herein may
be trademarks of their respective holders.

Silicon Laboratories Inc.
Lindsey Starnes, +1 512-532-5349
Lindsey.starnes@silabs.com

Copyright Business Wire 2009