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Intersil's Analog Switches Provide Ultra-Low On-Resistance and Save up to 72% Board Space over Previous Packages

— Housed in Space-Saving ìTQFN Packages, the ISL54050 Features 0.27 Ohms Typical On-Resistance and the ISL54056 Provides 0.45 Ohms Typical On-Resistance for Lower Signal Loss and More Power to the Cell Phone Receiver in Handset Applications

MILPITAS, CA, November 22, 2006 – Intersil Corporation (NASDAQ Global Select: ISIL), a world leader in the design and manufacture of high-performance analog semiconductors, today introduced the low-voltage dual ISL54050 and quad ISL54056 single pole double throw (SPDT) analog switches. These switches provide ultra-low, flatter on-resistance, resulting in better signal quality in battery-powered, portable and handheld equipment.

These devices, housed in tiny ìTQFN packages, save up to 72% board space compared to TDFN and TQFN packages, making more room for valuable features in cell phone applications. The ISL54050/56, at 0.5mm thick, are approximately 33% thinner than TDFN and TQFN packaged parts, have low supply current, and can operate with low logic control signals to reduce battery drain and extend talk time while eliminating crosstalk.

“The thinner packaging of the ISL54050/56 saves vertical space on the board, offering designers more flexibility to place boards back-to-back or in other space-saving configurations, “said Chris Ludeman, marketing manager for Intersil’s Switch, Multiplexer and ATE products group. “These devices maintain low signal loss and distortion, providing a clean signal for MP3 features in cell phones and have the ability to run directly off a Li-ion battery for louder ring tones. They also withstand high ESD (electrostatic discharge) levels, improving end product reliability.”

Space Savings and Low Distortion
Intersil’s ISL54050 is dual low-voltage single pole double throw analog switch and the ISL54056 is a quad, low-voltage single pole double throw analog switch. They are bidirectional switches that can also be used as single and dual differential, 2:1 multiplexers, respectively.

When operated from a 3.3V supply, the ISL54050 has a typical on-resistance of 0.27 Ohms and the ISL54056 has a typical on resistance of 0.45 Ohms and a resistance flatness of 0.03 Ohms and 0.05 Ohms respectively, resulting in very low total harmonic distortion (THD) for use in low-distortion audio paths such as in MP3 players in cell phones and CD audio devices.

Unlike competing devices where significant cross conduction current is present, the ISL54050/56 exhibit low supply current when operated with logic control signals that are lower than the device supply voltage.

Key Features

• Pb-free (RoHS compliant)
• Reduced size upgrade of Intersil’s ISL8484 and ISL8499 dual and quad switch devices in TDFN and TQFN packages
• ON-resistance (RON)
  • V+ = +4.3V 0.29 Ohms
  • V+ = +3.0V 0.33 Ohms
  • V+ = +1.8V 0.55 Ohms
• RON matching between channels 0.06 Ohms
• RON flatness across signal range 0.03 Ohms (ISL54050) and 0.05 Ohms (ISL54056)
• Single supply operation +1.65V to +4.5V
• Low power consumption (PD) <0.45ìW
• Fast switching action (V+ = +4.3V)
  • tON 40ns
  • tOFF 20ns
• ESD HBM rating >8kV
• Break-before-make function
• 1.8V logic compatible
• Available in 10 Ld 1.8x1.4x0.5mm ìTQFN (ISL54050) and 16 Ld 2.6x1.8x0.5mm ìTQFN (ISL54056) packages

Target Applications

• Battery-powered, handheld and portable equipment
  • Cellular/mobile phones
  • Pagers
  • Laptops, notebooks and palmtops
• Portable test and measurement
• Medical equipment
• Audio and video switching

About Intersil’s Precision Analog Switch Products
Intersil has a broad portfolio of analog switches that provide excellent performance across the entire input voltage range. Each new device incorporates more than 30 years of market experience into its design. Precision analog switches and MUXs from Intersil meet today's design challenges for low-voltage, low on-resistance and smaller packaging. Intersil leads in technology innovation with the industry's lowest-distortion and highest-ESD sub-0.5Ohm analog switches, the ISL54050 and ISL54056, in uTQFN packaging, designed for handheld applications. To learn more about Intersil’s broad switching portfolio, visit Intersil’s Analog Switches, Multiplexers and Crosspoints page at http://www.intersil.com/switchmux/.

Pricing and Availability
The ISL54050 is available now in a 10-lead QFN package and is priced at $1.40 each, and the ISL54056 is available now in a 16-lead QFN package and is priced at $1.60 each in 1,000-unit quantities. Both parts are also available in ìTQFN packaging.

More information on the ISL54050 is available at http://www.intersil.com/cda/deviceinfo/0,1477,ISL54050,0.html and more information on the ISL54056 is available at http://www.intersil.com/cda/deviceinfo/0,1477,ISL54056,0.html.

Note to editors: To view a high-resolution downloadable photo of the ISL54050/56, visit Intersil’s photo room at: http://www.intersil.com/pressroom/photoarchives.asp About Intersil
Intersil Corporation (NASDAQ: ISIL) is a leader in the design and manufacture of high performance analog semiconductors. The Company’s products address three of the industry’s fastest growing markets: flat panel displays, handhelds and power management. Intersil products include power management devices for battery management, hot-swap and hot-plug controllers, linear regulators, supervisory ICs, switching DC/ DC regulators and power MOSFET drivers; optical storage laser diode drivers; DSL line drivers; video and high performance operational amplifiers; data converters; interface ICs; analog switches and multiplexers; crosspoint switches; voice-over-IP devices; and ICs for military, space and rad-hard applications. For more information about Intersil or to find out how to become a member of our winning team, visit the Company’s web site and career page atwww.intersil.com.