News & Events
Intersil Launches Dual Analog Switch With Low Resistance, High ESD Protection and Small Package Size, Ideal for Battery-Operated, Portable Applications

— The ISL8484 has more than double the ESD withstand level of competitive devices.~— Features lower on-resistance at low (1.8V) supply voltages and flatness making it ideal for use in low distortion audio paths for MP3 players, cell phones and CD audio devices.

MILPITAS, CA, March 29, 2005 – Intersil Corporation (NASDAQ: ISIL), a world leader in the design and manufacture of high performance analog solutions, announced today a new dual analog switch that features less than 0.5 ohm on-resistance across the input signal range and very low on-resistance flatness. In addition, this device features improved ESD capability and is offered in very small packages, making it ideal for battery-powered, handheld and portable equipment. The ISL8484 device is a bi-directional, dual SPDT analog switch designed to operate from a single +1.65V to +4.5V supply, allowing it to operate directly off a lithium ion battery supply.

“The ISL8484 offers precise switching capability from a single supply and with its low on-resistance and high ESD withstand capability, is superior to competitive devices,” said Chris Ludeman, product marketing manager in Intersil’s Analog Signal Processing products group. “It is especially well suited to portable battery powered applications because of its direct-off-battery operating capability, low power consumption, and low leakage currents. The ultra-low on-resistance and Ron flatness provide very low insertion loss and distortion for applications that require accurate signal reproduction.”

The ISL8484 is a guaranteed break-before-make dual SPDT switch. When operated from a 3.3V supply, the device has a typical Ron flatness of 0.03 ohms, making it ideal for use in low distortion audio paths found in MP3 players, advanced cell phones and CD audio devices.

The digital logic input is 1.8V logic compatible when using a single +3V supply. This part has also been specifically designed to operate with minimal supply currents when using supply voltages of up to 4.5V while being driven by logic signals from a controller device operating from a lower supply voltage. This is important for applications such as 2.5/3G smart phones; these typically combine low voltage, mixed signal baseband devices with higher voltage analog switches and amplifiers for driving speaker loads.

This part may be used to “mux-in” additional functionality such as FM radio or MP3 audio capability, while reducing design risk. The ISL8484 is offered in small form factor packages, alleviating board space limitations. The ISL8484 is a committed dual single-pole/double-throw (SPDT) device, comprising two normally open (NO) and two normally closed (NC) switches; this configuration allows the ISL8484 to be used as a dual 2-to-1 multiplexer.

ISL8484 Features

Number of switches: On-resistance (Ron) V = +4.3V: V = +3.0V: V = +1.8V: Ron matching between channels: Ron flatness across signal range: Single supply operation: Low power consumption (PD): Fast switching action (V+ = +4.3V) tON: tOFF: ESD HBM rating: Guaranteed break-before-make 1.8V logic compatible (+3V supply) Low supply current when logic inputs are not at the supply rail

2 0.23 ohms 0.27 ohms 0.45 ohms 0.03 ohms 0.03 ohms +1.65V to +4.5V <0.3µW 20ns 15ns >9kV

Applications

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

Availability and Pricing
The ISL8484 is available now in standard or Pb-free (RoHS compliant) 10-lead 3 x 3mm TDFN or MSOP packages. The suggested price in 1,000 unit quantities is $1.00 each in TDFN packaging. To learn more about the ISL8484 or other high-performance analog signal processing solutions online from Intersil’s web site at: www.intersil.com About Intersil
Intersil Corporation, a NASDAQ 100 Index company, 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, optical storage (CD and DVD recordable) 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 at www.intersil.com.

This release may include "forward looking statements" that are subject to risks and uncertainties. For information identifying economic, political, climatic, currency, regulatory, technological, competitive and some other important factors that could cause actual results to differ materially from those anticipated in the forward looking statements, see Intersil’s Safe Harbor Forward Looking Statement disclaimer found at http://www.intersil.com/legal.asp, as well as Intersil’s SEC filings as updated from time to time, found at http://www.sec.gov. All trademarks mentioned are the property of their respective owners.