No end in sight for DDR price meltdown News & Analysis 2/28/2003 Post a comment Contract prices for mainstream DDR SDRAM have plunged 25% to 33% in a month amid a glutted global market. Although DDR prices have been declining steadily from a peak in November, the latest sharp drop was welcomed by OEM buyers caught in their own competitive product pricing squeeze.<
Delivering TDM over IP: Weighing the Options Design How-To 2/27/2003 Post a comment With VoIP adoption still low, designers need to evaluate new options for delivering TDM traffic over IP links. TDMoIP and Ethernet plus TDM have emerged but before choosing one of these technologies designers need to weigh the pros and cons. Here's a guide to help.
The Nature of PCB Losses -- Part 2 News & Analysis 2/26/2003 Post a comment This is the time when even experienced digital designers and system engineers need to go back to book and application notes, says signal integrity guru Mike Grabois. In this conclusion to his tutorial on transmission line losses, Mike looks at Inter Symbol Interference and other line losses -- as well as equalization, pre-distortion and other compensation techniques.
Adjusting Optical Sub-Systems in DWDM Equipment. News & Analysis 2/26/2003 Post a comment As carriers demand longer reaches and modularity from the equipment they purchase, dynamic adjustment capabilities will be increasingly crucial in the system design. To make self-adjust capabilities more affordable, chip and module manufacturers are forging new integration paths. Here's a look at some of these efforts.
Bootstrap power supply permits amplifier output to touch ground News & Analysis 2/24/2003 Post a comment Many single supply powered applications require amplifier output swings within millivolt or even sub-millivolt levels of ground. Amplifier output saturation limitations normally preclude such operation. From the February Planet Analog magazine folio, this famous applications guru offers tips for approaching ground -- without getting stuck there.
Vendors debate viable IP business model News & Analysis 2/24/2003 Post a comment Three IP vendors debated the question of how to make silicon intellectual property into a viable business, during a panel discussion here moderated by E.E Times editor-in-chief Brian Fuller.
Tracepoints assure safe monitoring of in-field net devices News & Analysis 2/24/2003 Post a comment Today's embedded network infrastructure controls crucial services: telephone switching systems connecting data and voice for an entire region of a country, power plants distributing power over geographical areas, and satellite monitoring systems for controlling fleets of weather satellites.
Embedded wireless networking drives new ISAs for MCUs News & Analysis 2/24/2003 Post a comment Instruction set architectures, tuned specifically for wireless and other network traffic and computing models, are now coming to market that make processing of packets more efficient and easier to develop and program applications for networked embedded systems.
Brokerage layer simplifies design News & Analysis 2/24/2003 Post a comment The rise of the Internet Protocol-based network as a low-cost, ubiquitous embedded networking environment has led to strong interest in networking what used to be standalone electronic devices with remote applications and other back-end systems.
Humbled Intel spells out plans for comms group News & Analysis 2/21/2003 Post a comment Sean Maloney, the general manager of Intel's communications group, said the company is poised to roll out its first internally-designed RF products, see growth in its network processors, and launch a 90-nm process with combined CMOS, analog and silicon germanium technology.
Artisan completes Nurlogic acquisition News & Analysis 2/21/2003 Post a comment Artisan Components, Inc. (Sunnyvale, Calif.) announced the completion of its acquisition of NurLogic Design Inc. (San Diego), a provider of analog intellecutal property (IP) and high-bandwidth connectivity cores.
Integration eases buck regulator design Product News 2/20/2003 Post a comment Five Little Foot plus Driver power semiconductors from Siliconix, a Vishay Intertechnology company, have been designed to simplify the use of n-channel MOSFETs in high-frequency buck regulators.
Removing Pessimism from Crosstalk Analysis News & Analysis 2/20/2003 Post a comment As designers make the leap to 130-nm and smaller geometries, mitigating crosstalk becomes an even bigger headache. By combining techniques, like buffer-insertion, with off-the-shelf EDA tools, designers can greatly improve their crosstalk capabilities.
Practical applications of digital filters News & Analysis 2/20/2003 Post a comment In part 3, David Zaucha offers examples of two practical digital audio applications for filters. The first example is an equalization of a small monitor loudspeaker. The second example is an electronic crossover for a 3-way loudspeaker.
Understanding losses is key to state-of-the-art interfacing News & Analysis 2/19/2003 Post a comment The new signal data rates have changed the interface arena completely. The IC manufacturers and tool makers have come up with a number of methods that may save you money and extend life of old components and materials. This is the time when even experienced digital designers and system engineers need to go back to book and application notes, says one our favorite contributors, signal integrity guru Mike Grabois.
Active cooling techniques drive PC thermal management News & Analysis 2/19/2003 Post a comment Miniaturization and portability trends in combination with increasing performance are contributing to the well know problem of heat concentration and dissipation in modern electronic appliances. From the February issue of PA magazine, a Fairchild scientist explores the prospects for active cooling.
What Causes Batteries to Fail? News & Analysis 2/19/2003 Post a comment Battery design is a critical element in today's portable applications. Here's an inside look at why battery fail and some techniques for circumventing these problems.
Gaining an EDGE in Multi-Mode Wireless Designs Design How-To 2/18/2003 Post a comment The EDGE revolution is coming. But to make it happen designers must build multi-mode GRPS/EDGE devices, forcing designers to deeply understand the differences between the protocols. Here's a look at those differences.
Solutions arrive for ad hoc nets Design How-To 2/14/2003 Post a comment A peer-to-peer wireless system offers considerable advantages over more-traditional wireless-network architectures such as cellular or wireless local-area networks. However, it also poses different technical challenges.
Mobile networks hit noise hurdles News & Analysis 2/14/2003 Post a comment The emergence of wireless ad hoc networks means that multiple, diverse wireless devices will be operating in close proximity. In particular, the coexistence of IEEE 802.11b and IEEE 802.11g with Bluetooth personal-area networks will be an important user satisfaction issue.
Fixed wireless links mobile nets Design How-To 2/14/2003 Post a comment While ad hoc and mesh networks are focused on the interconnection of independent nodes, at some stage these networks will need to connect to the wired Internet.
How many bits do you need - Part 2 News & Analysis 2/13/2003 Post a comment Digital audio systems use finite precision in representing signals and coefficients and in performing arithmetic operations. Consequently, audio system performance is determined by the precision that is used throughout the system. This part of David Zaucha's paper looks at implementation landmines.
Your vending machine can talk thanks to a 5 embedded modem News & Analysis 2/12/2003 Post a comment It's not just coke and Mars bars. Vending machines sell Kodak cameras, CD records, eyeglasses and books - a $56.8 billion market, according to Vending Times magazine. Of this 2000 total, some $39.3 billion was in what the vending industry calls the "four Cs" (candy, coffee, cold drinks, and cigarettes). Wouldn't it be interesting, engineers speculate, if the vending machine could call you up every time it needs to be refreshed. The cost of this add-on, a Cypress Microsystems applications enginee