DC/DCs on ceramic beat the heat News & Analysis 2/26/2004 Post a comment C&D Technologies' NCX10S series of single-output surface-mount DC/DC converters, relying on the benefits of its ceramic substrate, can deliver its full 10 watt output at temperatures up to +85°C without heatsinking. Its so-called "compliant-leg" technology ensures enhanced mechanical reliability by compensating for expansion and contraction caused by the different coefficients of thermal expansion between the converter substrate and the PC board onto which it is mounted.
Silicon thermistors provide more accurate temperature sensing, optimizing system performance News & Analysis 2/26/2004 Post a comment Andigilog announced the SiMISTOR family of linear and highly accurate silicon thermistors. The products, manufactured using mature CMOS processes, can replace traditional thermistors in high-volume cell phones, PCs and peripherals, PDAs, and consumer device applications. The family also displaces thermistors in traditional industrial applications, such as thermostats and portable medical devices.
Ultracaps available in 3F and 100F versions News & Analysis 2/26/2004 Post a comment NessCap Co. Ltd. has expanded its 2.7-volt ultracapacitor product offering with the addition of 3 farad (F) and 100F models. These components can be used as an energy source for a variety of applications including LED displays, remote control devices, toys, hand-held scanners, small printers, actuators and relays.
Your click counts Blog 2/25/2004 Post a comment Steve Ohr is nothing if not enthusiastic about publishing engineering design articles and showcasing new products on the web, and then counting the clicks they generate. "It puts you in touch with your readers," he suggests. But just think what an online product showcase can do in conjunction with a new tradeshow venue. Help us pick the most dramatic new product introductions, he bids.
Managing Power in HA Gateway Designs Design How-To 2/25/2004 Post a comment To provide true 99.999% reliability, designers must pay attention to providing highly available power supplies in their networking designs. From commsdesign.com, here's some tips from Texas Instruments' Jim Bird for bringing high availability to a power supply design.
On the Design of Higher-order Shelf Filters " Part 2 of 3 News & Analysis 2/25/2004 Post a comment The design of higher-order shelf filters, says TI's Rusty Allred, requires use of uncommon mathematics and numerical techniques. This paper streamlines the approach while exploiting the power of Matlab to make the design of these filters more accessible. In part 1, Rusty reviews the theory behind a MatLab implementation. In part 2, here, Rusty describes some practical implementations " particularly the filter coefficients. In part 3, the "appendix," Rusty describes the mathematical underpinning
Asian automakers join FlexRay News & Analysis 2/25/2004 Post a comment The FlexRay Consortium has confirmed that Toyota, Nissan, Honda, and Hyundai Kia Motors have joined the consortium, thus putting the weight of the overwhelming majority of major automakers behind the FlexRay effort to create a common standard for automotive by-wire technology.
Intel's Barrett sees digital home products by end of year News & Analysis 2/25/2004 Post a comment Intel Corp. CEO Craig Barrett, again stressing interoperability among consumer electronics devices for the "digital home," said the Digital Home Working Group (DHWG) will deliver its first technical guidelines in the second quarter with first products expected later this year. From Tokyo, Yoshiko Hara reports.
Cisco Catalyst switches add power-over-Ethernet News & Analysis 2/24/2004 Post a comment Cisco Systems Inc. has expanded its support for the IEEE 802.3af power-over-Ethernet specification to include most models of its Catalyst switches, both chassis and stackable. New PoE products include the first Cisco line cards to support Gigabit Ethernet as well as 10/100 Ethernet. Loring Wirbel reports.
Samsung, Frontier develop DAB solution for mobiles News & Analysis 2/24/2004 Post a comment Tuner developer Samsung Electro-Mechanics and digital audio broadcast (DAB) chip provider Frontier Silicon are using this week's 3GSM World Congress here to show off a jointly developed DAB receiver module for mobile phone and PDA designs.
3G handsets not ready for prime time, says Vodafone chief News & Analysis 2/24/2004 Post a comment Arun Sarin, CEO of Vodafone, Europe's largest GSM mobile phone network, dampened slightly the excitement surrounding the announcement of GSM's one-billionth subscriber that product-quality deficiencies will delay the mass roll-out of new 3G handsets through most of 2004. David Benjamin's story is one of many reports rolling in from the GSM Congress in Cannes this week.
EPA proposes power supply efficiency spec News & Analysis 2/24/2004 Post a comment The U.S. Environmental Protection Administration announced Monday (Feb.23) it would draft a proposal for efficiency specifications and a test procedure for single-voltage external ac/dc supplies, in a move to convince the power supply industry to develop more energy-efficient products. From the Apec conference in Anaheim, Spencer Chin filed this report.
Smallest, lowest power DAB module to date makes debut at 3G in Cannes Product News 2/24/2004 Post a comment Samsung Electro-Mechanics, a provider of electronic tuners, and Frontier Silicon, a supplier of DAB chips, have announced the two companies have cooperated to develop a miniature low power DAB receiver module specifically targeted for integration into mobile phone handsets and other communications devices.
Low-noise op amps offer rail-to-rail outputs and 3V operation Product News 2/24/2004 Post a comment Catch up on two families of operational amplifiers recently introduced by Linear Technologies and reviewed by editor Paul O'Shea. These devices consume only 50% as much power as competitive devices and deliver ultra low noise performance, rail-to-rail outputs and fully specified 3.3V operation.
Clock generators support XDR memory systems Product News 2/23/2004 Post a comment A cross-licensing agreement between Texas Instruments and Rambus will result in a new line of XCG clock generators. Get ready for fast data transfers in next-generation consumer, networking, and PC computing systems, the companies say.
Silicon thermistors provide more accurate temperature sensing, optimizing system performance Product News 2/22/2004 Post a comment Andigilog announced the SiMISTOR family of linear and highly accurate silicon thermistors. The products, manufactured using mature CMOS processes, can replace traditional thermistors in high-volume cell phones, PCs and peripherals, PDAs, and consumer device applications. The family also displaces thermistors in traditional industrial applications, such as thermostats and portable medical devices.
Low-cost amplifier provides headroom to prevent audio holes Product News 2/20/2004 Post a comment Philips introduces the TDA8947J amplifier to provide manufacturers of audio applications a low cost solution for high performance audio. It features the patented overload protection and enables headroom to prevent audio holes under extreme conditions such as low load impedances.
Quad PoE controllers operate autonomously Product News 2/19/2004 Post a comment Linear Technology promotes its LTC4258 and LTC4259 power-over-Ethernet (PoE) controllers for their rigorous design and autonomous operation for Power Sourcing Equipment (PSE). Fully compliant with the IEEE802.3af specification, the chips control four independent -48 V powered Ethernet ports. They step through all of the required tasks without processor intervention; precision measurements are performed by dedicated internal circuitry. Users add a few external MOSFETs, sense resistors and the pas
100-volt half-bridge drivers are among the smallest News & Analysis 2/18/2004 Post a comment These 2-amp drivers, for such applications as telecom and datacom power supplies and avionics DC/DC converters, come in an 8-lead exposed-pad (EP or E-pad) SOIC package to offer enhanced thermal efficiency, as well as a 4-by- 4 mm dual flat no-lead (DFN) package that the company says makes these 100-volt drivers the most space-efficient.
Advanced IPMs simplify motor control News & Analysis 2/18/2004 Post a comment International Rectifier has added three integrated power modules (IPMs) to their iMOTION family of products designed to simplify motor designs and speed time to market. The new IPMs, for mid- to high-power energy-efficient appliances, combine a three-phase, high-voltage, high-speed driver IC with a non-punch-through, short-circuit-rated IGBT and more than 20 components in a single unit. Users add a few external components and a microcontroller to build a complete variable-speed motor drive.
A/D converter achieves 7.5 ENOB at 1.6 GHz News & Analysis 2/18/2004 Post a comment National Semiconductor Corporation announced a CMOS analog-to-digital converter that requires 75 percent less power than most comparable products on the market. The 8-bit ADC081000 digitizes signals at sampling rates up to 1.6 GHz while consuming just 1.4 watts from a 1.9 volt nominal supply.
Mid-range DC/DC regulators tout 96% efficiency News & Analysis 2/18/2004 Post a comment Texas Instruments' TPS40070 and TPS40071 DC/DC (non-isolated) controllers, additions to the company's TPS40K line, secure high performance for the mid-voltage input range (4.5 to 28 volts) for networking, telecom, wireless base stations and computer server applications. These synchronous buck controllers leverage the company's Predictive Gate Drive technology, a digital feedback technique that senses body-diode conduction and optimizes the MOSFETs' turn-on and turn-off delays in synchronous rect
Growth returns but at slower pace, experts say News & Analysis 2/18/2004 Post a comment The semiconductor industry's growth rate will slow to 10-12 percent on average in the coming years, slower than the traditional rate but slightly more robust than earlier predictions, an STMicroelectronics vice president said Monday (Feb. 16). Alain Dutheil's prediction of the compound annual growth rate (CAGR) is somewhat more aggressive than that reported by the Semiconductor Industry Association, which forecasts 8-10 percent CAGR in the coming years. Brian Fuller was in Paris to capture this
Ultra Wideband gets mixed reception News & Analysis 2/18/2004 Post a comment A blue-ribbon panel convened here at the International Solid State Circuits Conference Monday evening (Feb.17) to ponder the rather Shakespearean question, "To UWB, or Not to Be?" The answers were decidedly mixed.
ISSCC panel refuses to say analog age has passed News & Analysis 2/17/2004 Post a comment "Twightlight of the Gods"? Steve Ohr sat in on an ISSCC panel debating whether the Golden Age of Analog Design has passed. While the consensus was an emphatic "no," the analog designer's shackles with digital technology provides new challenges - as well as food for thought.
A/D converter achieves 7.5 ENOB at 1.6 GHz Product News 2/17/2004 Post a comment National Semiconductor Corporation announced a CMOS analog-to-digital converter that requires 75 percent less power than most comparable products on the market. The 8-bit ADC081000 digitizes signals at sampling rates up to 1.6 GHz while consuming just 1.4 watts from a 1.9 volt nominal supply.
Mid-range DC/DC regulators tout 96% efficiency Product News 2/17/2004 Post a comment Texas Instruments' TPS40070 and TPS40071 DC/DC (non-isolated) controllers, additions to the company's TPS40K line, secure high performance for the mid-voltage input range (4.5 to 28 volts) for networking, telecom, wireless base stations and computer server applications. These synchronous buck controllers leverage the company's Predictive Gate Drive technology, a digital feedback technique that senses body-diode conduction and optimizes the MOSFETs' turn-on and turn-off delays in synchronous rect
Blog Doing Math in FPGAs Tom Burke 15 comments For a recent project, I explored doing "real" (that is, non-integer) math on a Spartan 3 FPGA. FPGAs, by their nature, do integer math. That is, there's no floating-point ...