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Analog Switch optimizes audio quality.
Analog Switch optimizes audio quality.

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Analog Switch optimizes audio quality.


October 13, 2008 - Offering negative signal capability, dual SPDT Model AS1747 allows designs without AC coupling capacitance in audio applications. Unit combines low on-resistance of 0.4 W with channel-to-channel matching of less than 0.03 W, minimizing amount of signal deviations between channels. Available in 10-pin 3 x 3 mm TDFN package, Model AS1747 operates from -40 to +85°C and handles negative signals with single positive 1.8-5.5 V power supply.

(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)

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austriamicrosystems' New Analog Switch AS1747 Enhances Audio Quality


New analog switch AS1747 is optimized for audio and can handle negative signals with a single positive power supply

Unterpremstaetten, Austria (September 30, 2008) - austriamicrosystems (SWX: AMS), a leading global designer and manufacturer of high performance analog ICs for communications, industrial, medical and automotive applications, today expanded its analog switch portfolio with the AS1747, a dual SPDT (single-pole/double-throw) low-voltage analog signal switch. The switch, which is the first within a family of switches with negative signal capability, allows designs without AC coupling capacitance in audio applications.

"Switches which are able to handle negative swings like the AS1747 are an ideal match for low-power, negativeswing capable audio amplifiers to achieve high-quality audio performance," said Walter Moshammer, Director Marketing Standard Linear at austriamicrosystems. "This system actually improves signal quality by removing the
AC coupling capacitors of the speaker, the primary source for audio pop noise. An additional benefit of this design is a longer battery lifetime, higher signal amplitude and reduction in cost and space."

The AS1747 combines the extremely low on-resistance of 0.4 W with an excellent channel-to-channel matching of
less then 0.03W, reducing the amount of signal deviations between channels to a minimum. Additionally, the AS1747 shows a remarkable on-resistance flatness of 0.25W. Altogether this improves total harmonic distortion (THD+N) to superb 0.01% and yields an excellent audio signal quality.

The AS1747 can handle negative signals with a single positive 1.8V to 5.5V power supply and is available in a 10-pin TDFN(3x3mm) package suitable for operating environments ranging from -40 to +85°C. More product specific information can be downloaded from the austriamicrosystems website at http://www.austriamicrosystems.com/An...

Electronic picture and block diagram are available on request or at
http://www.austriamicrosystems.com/en...

About austriamicrosystems

austriamicrosystems is a leading designer and manufacturer of high performance analog ICs, combining more than 25 years of analog design capabilities and system know-how with its own state-of-the-art manufacturing and test facilities. austriamicrosystems leverages its expertise in low power and high accuracy to provide industry-leading
customized and standard analog products. Operating worldwide with more than 1,000 employees, austriamicrosystems focuses on the areas of power management, sensors & sensor interfaces, portable audio and car access in its markets Communications, Industry & Medical and Automotive, complemented by its Full Service Foundry activities. austriamicrosystems is listed on the SWX Swiss Exchange in Zurich (ticker: AMS).




Contacts:

Marketing:
Ulrike Anderwald Marketing Communications Manager
INTL
Phone: +43 (0) 3136 500 5856
FAX: +43 (0) 3136 500 5420
Send email  E-mail this person

Engineering:
Rene Wutte Marketing Manager Standard Linear
INTL
Phone: +43 (0) 3136 500 5653
FAX: +43 (0) 3136 500 5420
Send email  E-mail this person

Company Information:
Name: austriamicrosystems AG
Address: 8141 Schloß
City: Premstatten
Country: Austria
Phone: +43 3136 500 5995
FAX: +43 3136 500 5420
http://www.austriamicrosystems.com


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austriamicrosystems and TTTech Intensify Cooperation on FlexRay Transceivers, Providing Customers with Efficient Chip and System Know-how
austriamicrosystems Introduces Analogbench Schematic Capture, Simulation and Analysis Tool for DC-DC ICs
AWR and austriamicrosystems Introduce Open Access Based SiGe Process Design Kit for Analog Office® RFIC Design Environment
austriamicrosystems' Rene Kautschitsch Elected as New Vice Chairman Europe of World Semiconductor Trade Statistics (WSTS)
austriamicrosystems and BeeDar Technology Present the BDUR-002 RFID Reader, BeeDar's Newest Mid Range UHF RFID Gen 2 Device
austriamicrosystems Announces Automotive High Voltage Companion ICs for LIN Networked Sensor and Actuator Slaves
austriamicrosystems' Foundry Unit Announces Availability of 0.18µm High-Voltage CMOS Process for Lead Customers
New Scale Technologies Significantly Expands Its Sales Reach Through austriamicrosystems
austriamicrosystems Builds Profound System Know-How on FlexRay(TM) - the Next Generation Automotive Networking System
austriamicrosystems Supplies AS5243, the Redundant 10-Bit Magnetic Angular Position IC, to MEGA-Line RACING ELECTRONICS and Audi R10 for the Le Mans 24 Hours 2008
Avnet Memec, austriamicrosystems Ink North American Distribution Pact
austriamicrosystems and Syscan International Pre-Release New Livetrack UHF RFID "Simply Gen2" Reader Enabling Customer to Achieve Faster Time to Market
austriamicrosystems Completes Equity Investment in Micro Motor Manufacturer New Scale Technologies
austriamicrosystems Becomes a Member of the Industry Council on ESD
Austriamicrosystems' Highly Integrated Power Management and Audio Unit Powers Falk F-Series, the World's Flattest Portable Navigation Device
austriamicrosystems Develops High Precision LED Driver for Latest LCD Backlight Technology Together with LG.Philips LCD
austriamicrosystems Develops Chip for Portable UHF RFID Readers
austriamicrosystems and IDS Microchip Announce Joint Development for Reader IC to Empower Portable UHF RFID Readers



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