EDN articles from November 2005

EDN archives from November 2005

Sputnik, races, and the state of US education.
November 10, 2005... "The harsh fact is that the US need for the highest quality human capital in science, mathematics, and engineering is not being met."--US Commission on National Security for the 21st Century As EDN's US readers, you represent the cream of...

Sub-1 [micro]A 12V op amp with rail-to-rail inputs.(Featured Products)
November 10, 2005... The LPV511 is a unity gain stable micropower operational amplifier that operates from a voltage supply range as wide as 2.7V to 12V, with guaranteed specifications at 3V, 5V, and 12V. The excellent speed-to-power ratio draws only 880 nA of...

Ultra low-power, 600 nA comparator with 6.6 [micro]s propagation delay.(Featured Products)
November 10, 2005... The LPV7215 comparator with guaranteed 645 nA supply current operates down to 1.8V. Maximum operating voltage is 5.5V. It features CMOS rail-to-rail input voltages and a push-pull output stage, allowing operation with the absolute minimum...

Energy scavenging for remote sensors.(DESIGN: idea)
November 10, 2005... A recent concept being implemented o power circuits is using energy scavenging. This makes use of energy collection through solar cells, piezoelectric generators, or other energy conversion devices. These devices collect energy from diffuse...

17 MHz, rail-to-rail output, low-noise, low-power amp.(Featured Products)
November 10, 2005... The LMP7711 is a low-noise, low-voltage, low-power amplifier with a very low offset. The unity-gain bandwidth is 17 MHz with a low-input voltage-noise density of 5.8nV/[square root of Hz], and a quiescent current of 1.4 mA (max). It provides...

High common-mode, bidirectional precision voltage difference amp.(Brief Article)
November 10, 2005... The LMP8271 is a fixed-gain differential amplifier with a -2V to 27V input common-mode voltage range and a supply voltage range of 4.75V to 5.5V. This precision amplifier will detect, amplify, and filter small differential signals in the...

Noninductive resistors handle high power with aplomb.(pulse: INNOVATIONS & INNOVATORS)
November 10, 2005... In the world of microwatts and milliamps, many applications, such as power supplies, motor controls, industrial equipment, and UPS systems, still need real power and heat dissipation. Offering these features, the MHP series from the BI...

Bright light, blown fuse: an obvious yet handy feature.(Brief Article)
November 10, 2005... Waytek's ATO and ATM minifuses include internal LEDs that light when a fuse blows, so that you can quickly identify the circuit that needs checking or the fuse that needs changing. Rated at 32V and available in 3 through 40A capacity, the...

Automotive FPGA family adds high-end models.(pulse: INNOVATIONS & INNOVATORS)
November 10, 2005... Xilinx has added five Spartan 3E devices and a Virtex 4 device, which includes a hard-wired PowerPC core, to its XA automotive FPGA lineup. When the company last year introduced the XA family, it included mostly CoolRunner II CPLDs and...

Innovative construction puts new twist on old principle.(pulse)
November 10, 2005... Designers have used miliions of Hall-effect sensors for contactless switching and position sensing, but rotary sensing using this phenomenon has mechanical and alignment difficulties. A new design from Melexis overcomes the limitations and...

Dilbert.(Cartoon)
November 10, 2005... I'D LIKE TO PROMOTE YOU, BUT THE LOWEST SALARY BAND FOR THE NEXT LEVEL IS 20% HIGHER THAN YOUR CURRENT PAY. RAISES ARE CAPPED AT 5%, SO THERE'S NO WAY TO GIVE YOU THE PROMOTION. SO I PLAN TO HIRE SOMEONE FROM THE OUTSIDE THAT YOU CAN...

Bluetooth IC introduces fifth generation.(pulse)
November 10, 2005... The BlueCore 5 multimedia external IC from CSR (Cambridge Silicon Radio) is the fifth generation of the company's hardware and software product for 2.4-GHz Bluetooth applications. This version has 64-MIPS internal-DSP-coprocessor power--double...

RF switch hits quadband-GSM-handset target.(pulse)
November 10, 2005... Peregrine Semiconductor now offers an SP6T (single-pole, six-throw) RF switch for 100- to 3000-MHz use that exceeds the tight performance standards necessary for cell phones in GSM (global-system-for-mobile-communications) and WCDMA...

Nanoscale oscillators synchronize for strength.(RESEARCH UPDATE)
November 10, 2005... Scientists at the NIST (National Institute of Standards and Technology) have discovered that nanoscale oscillators can naturally synchronize their output under certain conditions, a phenomenon that may lead to more compact microwave...

Technology boosts capacitor density 50 times.(RESEARCH UPDATE)
November 10, 2005... STMicroelectronics claims that a new technology enables the fabrication of capacitors with densities of more than 30 nF/[mm.sup.2], a 50-fold improvement over conventional processes based on oxides or nitrides of silicon or titanium. The...

Semiconductor nanowires yield superconducting transistors.(RESEARCH UPDATE)
November 10, 2005... A team of researchers in the Netherlands has created what it claims are the first superconducting transistors based on nanometer-scale semiconductor wires. The combination could enable electronic circuits based on dissipation-free...

Laser makes a kinder, gentler neural interface.(RESEARCH UPDATE)
November 10, 2005... Laser-technology company Aculight and Vanderbilt University (Nashville, TN) have won a contract from the National Institutes of Health (www.nih.gov) to develop a compact, low-cost neural stimulator. The device would assist in the treatment of...

Design software complies with ROHS.(GLOBAL DESIGNER)
November 10, 2005... ROHS (restriction-of-hazardous-substances) features are popping up in pc-board-design software. The ROHS directive, which strictly limits six substances, including lead, in electronics products for sale in the European Union after July 2006, is...

RAMless LCD driver supports QVGA.(GLOBAL DESIGNER)
November 10, 2005... Hong Kong-based Solomon Systech's SSD1279 LCD driver cleverly exploits the abundant memory resources available in advanced mobile phones that typically feature a microcontroller or DSP and an image processor. The SSD1279 takes advantage of the...

Feedback loop.
November 10, 2005... "Touting a power-supply chip as more efficient than an analog part is damning with faint praise. I should hope it's more efficient." Bradley Albing in EDN's Feedback Loop at www.edn.com/article/CA6268902. Add your comments.

Deconstructing gain and impedance from S11.
November 10, 2005... OK, this topic isn't for everyone, but this year, I have encountered so many people struggling with frequency-domain descriptions of transmission-line behavior that I thought I'd pass along some interesting tricks. My last column extracted...

Parts are parts.(TALES FROM THE CUBE)
November 10, 2005... In the mid-1960s, when I began designing circuits for military applications, many military-rated parts were available. We still had to occasionally qualify a "nonstandard" part, but it was not a huge ordeal, because manufacturers made the parts...

Riding the sine wave: broadband data hitches a ride with an unlikely carrier.
November 10, 2005... Proponents of BPL (broadband-over-power-line) technology insist that the best wires for the last mile were strung and connected long ago. But BPL still faces technical hurdles, a potentially nasty standards fight, and angry amateur-radio...

Portable connection can USB work over a network? USB is a successful interface for point-to-point connections, but implementing USB over IP presents challenges.".(Cover Story)
November 10, 2005... This year's USBOIP (Universal Serial Bus over Internet Protocol) hands-on project explores what is necessary to enable USB devices to operate over a network. The project attempts to spark interest and consideration about the emerging methods to...

Ho, Ho, Ho, and electronics shopping we go.
November 10, 2005... Electronics have for years taken center stage during the holiday-shopping season, and 2005 will be no exception. EDN has pulled together a lineup to help you with this year's shopping. First, a word of advice: Check the Internet, because that's...

Fourier rules in the frequency domain.
November 10, 2005... The widespread design of wireless devices forces many engineers to move from the time domain into the frequency domain. An instrument such as a spectrum analyzer and a tool such as the Fourier transform can present frequency-domain information...

Challenges for designers of digital-camera audio subsystems: more than a few design tricks go into providing the impressive audio performance of low-cost digital-video cameras.
November 10, 2005... From a system designer's point of view, digital-video cameras combine the worst of the portable consumer and home-entertainment worlds. There are rigid constraints on space, power consumption, and component cost. But end users still expect...

Temperature-to-period circuit provides linearization of thermistor response.(design ideas: READERS SOLVE DESIGN PROBLEMS)
November 10, 2005... Designers often use thermistors rather than other temperature sensors because thermistors offer high sensitivity, compactness, low cost, and small time constants. But most thermistors' resistance-versus-temperature characteristics are highly...

Two wires control SPI high-speed ADC.(design ideas)
November 10, 2005... Most current microprocessors, DSPs, and field-programmable gate arrays integrate hardware and software resources that support either or both of two common interface standards--SPI (serial-peripheral interface) and [I.sup.2]C (inter-IC)/SMBus....

Volume-unit meter spans 60-dB dynamic range.(design ideas)
November 10, 2005... An audio volume-unit meter displays peak-related audio amplitudes to aid in accurately setting recording levels or for displaying an amplifier's operating conditions. A simple diode and capacitor network provides a classic volume-unit meter's...

Pacer clock saves subroutine calls.(design ideas)
November 10, 2005... This Design Idea outlines an easy-to-implement time-delay routine that requires no subroutine calls and thus avoids possible stack-overflow problems (Listing 1). This method also saves RAM space by requiring in most cases only two variables:...

Adapters allow SOIC interchange.(Small Outline Integrated Circuit )(Brief Article)
November 10, 2005... Correct-A-Chip adapters allow the use of SOIC D-package, 150-mil body chips on SOIC DW-package, 300-mil body-chip boards and vice versa. Series 666000 adapters accept narrow-body SOIC D-package devices and mount on boards for wide-body SOIC...

Connector system provides miniature docking.(CONNECTORS)
November 10, 2005... Taking up half the space of a single-row docking system, the 0.5-mm-pitch CradleCon connector also has a smaller form factor than most competitive dual-row systems. The system suits digital cameras, audio players, mobile phones, and other...

HDMI receptacle provides low-impedance mismatch.(high definition multimedia interface)(Brief Article)
November 10, 2005... Carrying 5 Gbps of uncompressed video and audio in one cable, this HDMI (high-definition-multimedia-interface) receptacle contains metal shields for EMI protection, providing low impedance. The surface-mount-terminated receptacle is capable of...

Cable assembly features self-locking ZMA connectors.(CONNECTORS)
November 10, 2005... This cable-assembly series includes self-locking ZMA coaxial connectors, eliminating the axial movement typical in BNC connectors and retaining the BNC's quarter-turn installation+ characteristics. The device achieves a 10-dB gain in RF...

Micropitch interfaces come in three submillimeter sizes.(Brief Article)
November 10, 2005... Targeting low-profile applications with a 2.31-mm mated height, these 0.5-mm-pitch interface systems are also available for 5-mm board spacing. Suiting applications requiring less density, the 0.635- and 0.8-mm-pitch systems are available with...

High-density connector suits differential and single-ended systems.(CONNECTORS)
November 10, 2005... The 14-row version of the high-speed, high-density Ventura connector features 178 single-ended and 93 differential signals per inch. This design uses a standards-compliant, 110- or 12-mil via. Designers can use it in 6.25-Gbps, single-ended and...

Category 5e UTP cables find use in rugged environments.(unshielded-twisted-pair)(Belden CDT Inc)(Brief Article)
November 10, 2005... The 1304A and 1305A AES (Advanced Encryption Standard)/ EBU (Enterprise Backup Utility)-compliant Brilliance CatSnake tactical field-deployable Category 5e UTP (unshielded-twisted-pair) cables feature bonded-pair UTPs. The 24-gauge-AWG,...

Cable assembly relocates connector jacks off the pc board.(CONNECTORS)
November 10, 2005... Targeting applications in need of higher density, the Octopus network-interface multiconnector cable assembly moves the network-facing connections on the box from full-size or MBNC jacks on the pc board to a 100-mil center multipin pc-board...

Digital megohmmeter combines analog and digital features.(Brief Article)
November 10, 2005... The 1860 megohmmeter features an enhanced LCD that presents measurements in digital and analog formats for instant test results and an RS-232C interface for serial-data collection. The device measures the insulation resistance of components and...

Locking programmable oscillator generates a low-noise sine wave.(Brief Article)
November 10, 2005... Based on Analog Devices' AD-9858 1-GHz DDS (direct-digital synthesizer), the Model LPO400A locking programmable oscillator generates a noise sine wave of 200 kHz to 400 MHz and ECL-level clock outputs. The device features a user-programmable...

AWG family features 12-bit resolution.(arbitrary-waveform-generator)(Brief Article)
November 10, 2005... The PCI CompuGen family of ultrafast AWG (arbitrary-waveform-generator) cards has 12-bit resolution. The 11G member of the family features a 1 billion/sec conversion rate with a single channel, the 4300 has a 300 million/sec rate with four...

Set-top-box MPEG-2 decoders support dual-TV and -DVR applications.(INTEGRATED CIRCUITS)
November 10, 2005... Implementing SVP (Secure Video Processor) technology, the STB-5524 and STB5525 set-top-box devices target the DVR (digital-video-reader) market; the 5525 also supports dual-TV and -DVR requirements in standard-definition set-top boxes. Both...

DSP series supports 7.1 channels.(INTEGRATED CIRCUITS)
November 10, 2005... The Aureus DA7xx DSPs support 7.1 channels, including AC3 or DTS decoding, Dolby ProLogic IIx or Neo:6 matrix decoding, bass management, and delay, using 22% of available performance of a DA710 processor. The 250-MHz TMS320DA708 comes in a...

Single-chip H.264 codec requires low power.(INTEGRATED CIRCUITS)
November 10, 2005... Requiring less than 185 mV of total chip power, the MG 1264 single-chip VGA 30 fps H.264 video codec enables two-channel AAC audio encoding. The chip's EVE (enabling-video-everywhere) architecture uses dedicated hardware media-processing...

Physical-layer port-protection switch targets video systems.(INTEGRATED CIRCUITS)
November 10, 2005... For use with the vendor's Hotlink-On-Demand family of video serializers/deserializers, the YLink SMPTE (Society of Motion Picture and Television Engineers)physical-layer port-protection switch provides HD-SDI and SD-SDI...

Wildfire ignites, then extinguishes.(Brief Article)
November 10, 2005... From 1990 through 1995, Massachusetts-based Wildfire Communications developed and marketed the Wildfire telephone-based "virtual assistant," which was the subject of a significant amount of media coverage and numerous favorable--even...

Letter from the editor.(PART FOUR: EMBEDDED POWER: A SPECIAL SUPPLEMENT TO EDN)(Editorial)
November 10, 2005... The market for embedded ac-dc power supplies and dc-dc converters is currently being driven by a number of technologies, including blade servers, Power-over-Ethernet (POE), and the intermediate bus architecture (IBA). Combined with digital...

Embedded power: supplies reach new heights.
November 10, 2005... A number of trends are converging that are pushing embedded ac-dc power supplies and dc-dc converter modules towards higher wattages. Rapidly growing blade servers, Power-over-Ethernet (PoE) equipment and several other devices are driving power...

New ICs simplify embedded POL DC/DC converter designs.(CASE Study)
November 10, 2005... the challenge Most embedded systems are powered via a 48V back-plane. This voltage is normally stepped-down to a lower intermediate voltage of either 12V or 5V to allow power to the racks of boards within the system. However. most of the...

AC powering: semiconductor growth.
November 10, 2005... Embedded power is used in a wide range of distributed power architectures with much of the design focus going to the dc output side. Challenges on the ac input side are equally demanding, however, including power factor correction (PFC), hot...

Scalable power systems meet the needs of configurable blade servers.(CASE Study)
November 10, 2005... the challenge Blade server computing systems must be highly configurable to meet a variety of application needs. As a result, blade servers are bought and sold primarily based upon a desired amount of processing power required to meet the...

PFC/PWM combo IC enables best power and board space efficiency in LCD TV's.(CASE Study)
November 10, 2005... the challenge Power conservation inside the appliance In the next few years, the worldwide number of color TVs is expected to stay roughly flat while the digital TV (DTV) sub-segment will grow at a brisk 30% CAGR, reaching 94 MUs in...

Which voltage bus is best?(CASE Study)
November 10, 2005... the challenge To meet the design goals of the equipment, the customer needed not only to reduce the size of his new design, but also reduce the material cost while at the same time increase the functionality of the power conversion and...

No nation left behind--by electronics.(EDN.COMMENT)
November 21, 2005... As markets saturate in developed nations, the focus turns to emerging economies to pick up the slack. But two recent initiatives to help the poor nations--creating a less-than-$30 mobile phone and a $100 laptop--fall into the category of good...

Motion controller boosts servo-loop rate.(pulse: INNOVATIONS & INNOVATORS)
November 21, 2005... Targeting high-performance applications in the medical, scientific, and automation industries, Performance Motion Devices recently announced the Magellan-PCI motion controller featuring a servo-loop rate of 50 [micro]sec per axis. Available in...

Vehicle-bus analyzer decodes CAN in symbolic format.(Pulse: INNOVATIONS & INNOVATORS)
November 21, 2005... LeCroy's new VBA (vehicle-bus-analyzer) oscilloscopes decode CAN (controller-area-network) serial data into symbolic application-layer text. The instruments allow designers of CAN electronic-control units and vehicle networks to view the full...

Network time server keeps dispersed systems in sync.(pulse)
November 21, 2005... Don't kid yourself: A basic crystal oscillator on a pc board has significant drift and other variabilities. So, even if you have a precise timing source at each system node, you also need a way to properly synchronize them to the same time (see...

I/O module targets applications requiring high voltage.(Brief Article)
November 21, 2005... The new EPC182 from Micro/sys offers 64 lines of isolated inputs that can handle 3 to 50V dc and 16 relays for isolated I/O signaling with a switching capacity of 2A. A user-selectable pullup/pulldown resistor allows designers to pull each...

Dilbert.(pulse)(Cartoon)
November 21, 2005... THIS AWARD GOES TO ASOK FOR HIS HARD WORK ON... WHATEVER MY DEDICATION HAS BEEN REWARDED! THIS IS THE HAPPIEST MOMENT OF MY LIFE! WOW! ITS LUCKY THAT I GOT A NEW CHAIR ON THE SAME DAY THAT MINE WAS STOLEN. [ILLUSTRATION OMITTED]

Card integrates signal acquisition, scan conversion.(pulse)
November 21, 2005... Curtiss-Wright Controls Embedded Computing has announced Advantage-Zeta, a new radar-scan converter that combines signal acquisition and scan conversion onto a single PCI card. The card supports as many as three analog-video inputs and as many...

How low can 32 bits go?(pulse)
November 21, 2005... With the new LPC2101, LPC2102, and LPC2103 microcontrollers, Philips Electronics continues to push down the lower limit for the price of 32-bit units. These ARM-7 TDMI-S-based devices sell for as little as $1.47 (10,000). Philips accomplished...

Feedback loop.(pulse)
November 21, 2005... "Americans seem to get in all sorts of knots with metric measures! As someone who started school |earning imperial units and finished fully metric, I am glad I don't have to attempt engineering calculations using feet/inches/fractions,...

Kits speed video development.(pulse)
November 21, 2005... Xilinx's MVI (multimedia/video/imaging) systems are the first in a series on the Xtreme DSP road map. The first product offerings comprise the VSK-4VSX35 video-starter kit, the XEVM642 video-coprocessing-development kit, and the new MPEG-4...

Imagers pose complex design challenges.(GLOBAL DESIGNER)
November 21, 2005... Mobile-phone cameras are beginning to rival stand-alone digital cameras in resolution, and it won't be long before they will be able to shoot MPEG-4 videos and incorporate advanced algorithms for sophisticated manipulation of images. The...

Bits and pieces.(pulse)
November 21, 2005... Beijing-based Digital TransVideo Technology Co Ltd recently unveiled the DMD2000 plus and DMD3000 plus H.264 IPTV (Internet Protocol-TV) set-top-box digital-media devices, which target the IPTV market in North America. For more, see...

Modbus IDA, ITEI open joint test laboratory.(Instrumentation Technology and Economy Institute)(Brief Article)
November 21, 2005... Modbus IDA, an organization comprising automation-device users and suppliers focused on the adoption of the Modbus-protocol suite, and the ITEI (Instrumentation Technology and Economy Institute) have opened the ITEI's Modbus Conformance Test...

Check the bias current (or how to ensure that a blessing is heard).(Rarely Asked Questions: Strange but true stories from the call logs of Analog Devices)(Advertisement)
November 21, 2005... Q. The bias current in modern amplifiers is very small. Do I need to bother about it? A. At Mass in Limerick, Ireland (the location of one of Analog Devices' manufacturing facilities) one Sunday, the priest was rather softly spoken. Almost...

Freescale's Sam Coursen: it takes one to know one.(VOICES)
November 21, 2005... Sam Coursen is the chief information officer at Freescale Semiconductor. These days, that title usually goes to people with degrees in computer science or master's degrees in business administration. But Coursen is different. When he graduated...

Protect your circuits from ESD occurrences.(BAKER'S BEST)
November 21, 2005... Oh, the things they don't teach you in college. In my first week of employment, I wore leather-soled shoes and nice polyester slacks. So dressed, I picked up a customer-returned JFET operational amplifier and plugged it into a test socket. The...

Driverless vehicles take on the desert.
November 21, 2005... The Darpa Grand Challenge--not since the fabled transcontinental races of a century ago have so many engineers, professors, students, corporate teams, and garage tinkerers been drawn to so daunting a task. On the surface, it seems, well......

ASIC prototyping: make versus buy: as digital-IC designs have become more complex, so too, has the task of verifying their functions. Over the years, EDA vendors have done little to reduce the gap between the number of gates you can design and the number you can verify in a reasonable amount of time.
November 21, 2005... IC designers often spend as much as 60 to 80% of their time simply verifying designs, and that percentage is growing. To get a leg up on verification, many design groups have turned to hardware-assisted verification to prototype their designs....

Mobile robots get serious: after years of serving hobbyists and moviemakers, a series of world events may elevate mobile robots to technology's "next big thing.".
November 21, 2005... Although the concept and operational hardware for mobile robots have been around for decades, a rash of natural disasters and continuing military conflict have prompted designers to take a fresh look at the capabilities of this technology. The...

[I.sup.2]C data converters: high performance analog solutions from Linear Technology.(Advertisement)
November 21, 2005... Data converters, both analog-to-digital converters (ADCs) and digital-to-analog converters (DACs), are increasingly in demand for applications that digitally monitor and control system performance. Precision requirements are continuously...

A matter of balance: line-receiver CMR in real-world environments: few applications allow you to control the source impedance of your incoming signals, yet your line receiver's CMR can hang in the balance.(common-mode-response)
November 21, 2005... Common interconnect methods satisfy bandwidth, impedance, noise-immunity, attenuation, and signal-run-length requirements for a broad range of applications with surprisingly few topologies. Among the more robust is the balanced line, which...

Stereo-amplifier IC's outputs drive multiple loads: Jean-Jacques Avenel, Maxim Integrated Products, Lesigny, France.(design ideas: READERS SOLVE DESIGN PROBLEMS)
November 21, 2005... Newer generation, directly coupled stereo-amplifier ICs can directly drive headphones and speakers and thus eliminate bulky and expensive output-coupling capacitors. Many of these amplifiers also include a charge pump for generating an internal...

Muscle power drives battery-free electronics.(design ideas: READERS SOLVE DESIGN PROBLEMS)
November 21, 2005... Recent developments in electric-double-layer-capacitor technology have made it possible to replace rechargeable batteries in certain secondary-power-storage applications (Reference 1). Capacitors offer significant advantages over rechargeable...

FET biasing targets battery-powered PWM applications.(pulse-width-modulated)(Brief Article)
November 21, 2005... Many PWM (pulse-width-modulated) applications, such as Class D audio amplifiers, require symmetric drive circuitry. Comprising complementary N- and P-channel FET devices with gates and sources connected, the textbook CMOS pair in Figure 1...

Monolithic converter drives high power LEDs--Design Note 376.(DESIGN NOTES)(Advertisement)
November 21, 2005... Introduction High power LEDs are quickly expanding their reach as the lightsource of choice for flat panel computer and TV monitors, TV projection, signage, portable lights and automotive interior, trim and brake lighting. The input...

External 120W ac/dc power supply is convection-cooled.(Brief Article)
November 21, 2005... The convection-cooled AML120 requires no internal fan, resulting in low noise and improved reliability. This external 120W ac/dc power supply has a 4.9W/[in.sup.3] power density, an 86% full-load efficiency, and 6.58x2.56x1.46-in. dimensions....

Digitally programmable dc/dc converter complies with PMBus.(product roundup: POWER SOURCES)
November 21, 2005... Part of a new family of PMBus-compliant dc/dc converters, the nonisolated DPL20C POL (point-of-load) converter features a set of digital-configuration, monitoring, and diagnostic facilities accessible through the PMBus interface. This...

Cost-effective POL converters need no external controllers.(product roundup: POWER SOURCES)
November 21, 2005... The No-Bus POL (point-of-load) converters use pin strapping, one trim resistor, and one capacitor to eliminate power-management problems. The four-output power system needs no external controllers and other associated components, saving $5 to...

12V rectifier aims at datacom POL systems.(point-of-load)(Brief Article)
November 21, 2005... Targeting low-profile, 12V distributed-power-architecture applications, the CAR1212 front-end rectifier comes in a 1U-high footprint, measuring 1.61x4x11.2 in. Specifications include a 17W/[in.sup.3] ultrahigh-power density, 104A delivery, and...

Dual-output, 7.5W dc/dc converters reduce EMI.(product roundup: POWER SOURCES)
November 21, 2005... A five-sided metal case on the NDX 7.5W dc/dc-converter series reduces emissions in applications requiring dual positive/negative-voltage outputs. This wide-input, dual-output converter features a reduced component count, 24 or 48V nominal...