Pericom announces asynchronous mode support for PCI-to-PCI bridges News & Analysis 10/29/2003 Post a comment Asynchronous mode allows users to run the secondary bus at a frequency that is not derived from the primary bus, thus providing far greater support for next generation PCI bus designs. Asynchronous mode support is significant as customers engineer newer faster designs that need to merge with slower legacy devices, Pericom says.
LVDS serializer touts dc balance feature Product News 10/29/2003 Post a comment Maxim Integrated Products' MAX9209 21-bit low-voltage differential-signaling serializer offers users a programmable dc balance, which allows isolation between the serializer and deserializer by using ac coupling. The device serializes 21 bits of LVTTL/LVCMOS parallel inputs to three LVDS outputs
WSTS revises forecast for stronger chip market growth News & Analysis 10/29/2003 Post a comment With the threat from Sars retreating for now, the World Semiconductor Trade Statistics organization sees double-digit percentage growth year-on-year for the worldwide market from 2003 through 2005. The personal computing, wireless communications and digital consumer sectors are driving the current upturn. From Brussels, Peter Clarke reports.
Pericom announces asynchronous mode support for PCI-to-PCI bridges Product News 10/29/2003 Post a comment Asynchronous mode allows users to run the secondary bus at a frequency that is not derived from the primary bus, thus providing far greater support for next generation PCI bus designs. Asynchronous mode support is significant as customers engineer newer faster designs that need to merge with slower legacy devices, Pericom says.
Bus switch chip families aim for mixed-signal apps Product News 10/26/2003 Post a comment Texas Instruments Inc. says it has designed its CB3T, CB3Q and CBT-C bus switch chip families to meet the needs of system designers who face the challenge of supporting mixed-mode signal operation and need bus interface devices that provide voltage translation.
Power-over-Ethernet hookup eased Product News 10/26/2003 Post a comment Linear Technology's LTC4257 interface controller is the company's first power-over-Ethernet device made specifically to meet the powered device (PD) requirements of IEEE's 802.3af specification.
Maxim switch powers up to eight USB ports Product News 10/26/2003 Post a comment Maxim's MAX1562, MAX1562H and MAX-1563 current-limited switches power up to eight Universal Serial Bus ports. These 3- and 4-amp devices offer such features as autoreset and fault blanking for USB applications in notebook and desktop computers.
Maxim announces 3841crosspoint switch Product News 10/24/2003 Post a comment The MAX3841 is ideal for high-speed serial-data loopback, redundancy and switching for serial OC-192 and 10-Gigabit Ethernet applications or other applications up to 12.5 Gbits/s. Jon Gabay gives this assessment.
Backplane power management begins with fault monitoring Design How-To 10/22/2003 Post a comment Contributors to EE Times' October 13th InFocus section on "Backplane power management" described several different methods of buffering the power supplies on a circuit card from surges on a card cage backplane. We were particularly struck with Summit Microelectronics's overview of the processes used to monitor and control on-board voltages and current rushes. Their overview, digested for the InFocus section, stressed the issue of maintaining fail-safe operation. The article actually offered appl
Safety concerns for practical EMI line filters News & Analysis 10/21/2003 Post a comment When we design EMI filters, we will find that safety issues, thermal issues, and even loop stability concerns are intricately linked with the central issue of EMI, writes National's Sanjaya Maniktala in the third chapter of this book-length series. Hypothetically speaking, we can put up for sale almost product that doesn't perform properly, however product safety is a legal requirement, without which we cannot sell. In off-line applications and high-voltage DC-DC converters, where the voltages a
Lost Link Bandwidth " How to get it Back News & Analysis 10/21/2003 Post a comment Link bandwidth can be a slippery animal, writes TriCN's John Ellis, in this article adopted from the recent Comms Design Conferent. Without careful thought on the front end of the design, he says, attenuation, reflections and system noise can quickly turn a planned 10 Gbits/s link into mush. A thoughtful approach to the entire signal path " chips to leadframes, leadframes to boards, boards to connectors, connectors to backplanes, and back again " and inclusion of well-chosen equalization techniq
Quellan preps noise canceler chip News & Analysis 10/20/2003 Post a comment Quellan Inc. will announce an analog noise-cancellation chip that supports 5- and 6.25-Gbit/second backplane designs at the International Microelectronics and Packaging Society's IMAPS 2003 symposium. Quellan's Nx600 noise-canceling receiver extends the "speed reach" of gigabit backplanes, the company claims. Steve Ohr has this repoty.
Multiple vendors smarten up their hot-swap protection ICs News & Analysis 10/15/2003 Post a comment Hot-swap controller chips are coming to market in greater numbers and packed with more smarts. They've quickly evolved from discrete circuits into highly integrated chips, equipped with thermal sensing, that are proactive in maintaining power and board stability during transient events, as when a card is inserted into a live backplane. Concurrent with EE Times' InFocus report on backplane power management, Vince Biancomano has this survey on new controllers.
Steamed up over temperature Blog 10/15/2003 Post a comment Temperature ratings are illusive, reminds Bill Klein in the latest installment of his popular "Call I Took Last Week" last week series. You need to pay attention, not just to "mins" and "maxes," but also to ambient temperatures, junction temperatures and even storage conditions, Bill says. He certainly knows how to get your attention: You don't want your system crapping out prematurely, do you?
Measurements and Limits of Conducted EMI News & Analysis 10/15/2003 Post a comment In part 2 of this extended series on EMI effects, National Semiconductor's Sanjaya Maniktala takes up the basic concepts of common mode and differential mode noise, the regulatory conducted emission limits, and the related measuring techniques.