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ALS81A113QS500_Datasheet PDF

来源:LM317 Electronics Components编辑:Sierra Wireless时间:2021-06-15 14:24:10

Single-wall carbon nanotubes are 100 times stronger than steel at less than one sixth the weight and the strongest, stiffest, toughest material known, according to CNI. It also conducts electricity and conducts heat better than diamond.

Andover, Mass. – Vicor Corporation's new Technical Library, a component of the company's web site, offers engineers a broad knowledge database, from the basics of designing with component modules to information about the differences between the Intermediate Bus Architecture (IBA) and Factorized Power Architecture (FPA). The site provides one-click” access to Vicor's interactive design tools and design calculators, as well as applications manuals, mechanical drawings, and quality and certification information. Users have the option of searching by specific topic through an interactive table of contents for quick access to information.

Initial offerings in Vicor's library include a video seminar, Designing With Component Power Modules.” The technical content includes electrical, mechanical, and thermal design; control, mounting, EMI, and parallelingconsiderations; module do's and don'ts; and application examples. Also available are webcasts on EN compliance and power supply design considerations for high di/dtloads. All information in the library is available for download.

ALS81A113QS500_Datasheet PDF

The new library is also the source for the latest information on the company's Factorized Power Architecture and its V &#8226 I Chip products. The Why FactorizedPower Architecture” webcast reviews the attributes and limitations of current power distribution architectures,discusses FPA and compares FPA and IBA. Another webcast, Introducing Quarter Brick Intermediate Bus Converters,” discusses the advantages of the company's 100-amp, 600-watt V &#8226 I Chip Bus Converter Modules in IBA applications.www.vicorpower.com

GREEWICH, Conn. — A series of conflicting data points in the semiconductor market point to a summer slump and modest growth rates in the overall IC business, according to a report from American Technology Research Inc.

In recent weeks, several chip makers, including Amkor, Exar, ISSI, Sipex and Trident separately lowered their quarterly forecasts despite what appears to be a robust IC recovery. Last week, Conexant Systems Inc. lowered its forecast due to falling prices in the wireless local area networking market.

ALS81A113QS500_Datasheet PDF

Even before the slew of earnings warnings from 'second-tier' technology companies, there were sporadic reports about weakness in storage demand, NOR-flash memory pricing eroding, worries about handset sales in 2H04, and concerns about a pause in the PC market from the Grantsdale launch,” said Erach Desai, an analyst for American Technology Research, in the report.

Our field checks, over the past two weeks, also confirmed that (North American) distribution had slowed in May and through early June much like 'normal' summer seasonality would imply,” he said.

ALS81A113QS500_Datasheet PDF

Desai also said there is little doubt that year-over-year growth for this semiconductor cycle peaked in the first half of 2004. A robust spring of hope has given way to a typical summer slump,” he said. We do not see broad-based evidence of a rollover in fundamentals, but rather moderation to a 15-20 percent y/y growth rate.”

He added that the digital consumer/media, wireless handset, and industrial segments remain robust, while the networking and automotive markets are moderately strong.

Eine der jüngsten Wortmeldungen in der Debatte um die WLAN-Technik der Zukunft kommt vom Interuniversity Micro Electronics Center (IMEC) aus Löwen in der Nähe von Brüssel. Die belgischen Forscher haben der so genannten TGn Task Group die Technik für eine intelligente Antenne vorgelegt und hoffen nun, dass dieser Vorschlag bei der Ausarbeitung der Norm berücksichtigt wird.

Die TGn-Gruppe wird einen WLAN-Standard definieren, der Übertragunsraten zwischen 100 und 200 MBit/s, zumindest aber das Doppelte des aktuellen Standard 802.11g/a unterstützen soll.

Die vielen Vorschläge sind zwei lose zusammenhängenden Lagern zuzuordnen. Das eine, angeführt von dem Unternehmen Atheros Communications aus dem kalifornischen Sunnyvale, tritt für eine HF-Bandbreite von 40 MHz ein. In diesem Lager, genannt TG nSynch, tummeln sich eine Reihe von großen Namen, darunter Intel, Matsushita, Philips und Sony.

Die Gegner sammeln sich in der Gruppe 'World Wide Spectrum Efficiency' (WWiSE), um den Atheros-Konkurrenten Airgo Networks aus Palo Alto. Die WWiSE-Fans verfechten eine Bandbreite von nur 20 MHz. Auch hier findet sich mit Unternehmen wie Broadcom, Conexant, Mitsubishi, Motorola STMicroelectronics und Texas Instruments reichlich Prominenz.

Eine Seite – TG nSynch – ist daran interessiert, die Bandbreite auf 20 MHz zu verdoppeln, um die Datenraten auf das Zwei- bis Dreifache zu steigern. Hinsichtlich der Codierung hat diese Seite eher simple Ideen”, erläutert Matthew Shoemake, President des Ultrawideband-Startups WiQuest Communication und ehemaliger Vorsitzender der TGn-Arbeitsgruppe. Die andere Seite, nämlich WWiSE, will die Bandbreite von 20 MHz beibehalten und setzt dafür auf eine komplexere Codierung in Verbindung mit den so genannten MIMO-Techniken (multiple input, multiple output)”.

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