Gas gauge ICs fuel high accuracy Product News 10/31/2004 Post a comment Focus On battery management—Gas-gauging ICs for the high-stakes portable market are in the very-high-accuracy phase of their evolution, sparked by learning algorithms that enable the best of these "early warning" systems to determine remaining battery capacity to 1 percent. With power availability in portable devices perhaps the most critical factor in applications ranging from cell phones to medical monitoring, users and system designers want to know exactly what's left in the tank—to
Multichemistry battery IC simplifies charging Product News 10/29/2004 Post a comment Maxim Integrated Products' MAX8713, billed as a simplified SMBus-based multichemistry battery charger that uses a minimum number of external components, provides a regulated charge voltage accurate to ±0.5 percent for portable equipment applications such as handset car kits, digital cameras, and cable modems.
High detection range RF detector saves power for CDMA2000 mobile terminals Design How-To 10/28/2004 Post a comment The CDMA method is based on spread spectrum modulation techniques and spread spectrum principle is based on the Shannon information theory, writes a National Semiconductor engineer. The Shannon capacity law states that the channel capacity uses Additive White Gaussian Noise. Power consumption can be severe, he says, unless you have an RF detector that can implement closed loop control.
Secrets of level-translation revealed News & Analysis 10/27/2004 Post a comment Supply voltages continue to migrate to lower nodes to support today's low power, high performance applications. While some devices are capable of running at lower supply nodes, others might not have this capability. To have switching compatibility between these devices, the output of each driver must be compliant with the input of the receiver that it is driving. A Texas Instruments' engineer describes the some of the level translation schemes to interface these devices with one another, and the
LSI Logic cuts workforce, posts loss News & Analysis 10/27/2004 Post a comment LSI Logic Corp. (Milpitas, Calif.) cut 510 positions, approximately 11 percent of its workforce, as the semiconductor supplier announced a comprehensive restructuring program after an unprofitable third quarter.
Digi-Key signs agreement with Silicon Laboratories Product News 10/26/2004 Post a comment Digi-Key Corp., a leading catalog distributor, has announced a distribution agreement with Silicon Laboratories Inc. to distribute the company's high-performance, analog-intensive, 8-bit microcontroller (MCU) product portfolio as well as wireline, networking and synthesizer products.
Fairchild donates flu vaccines to Maine News & Analysis 10/26/2004 Post a comment Fairchild Semiconductor (South Portland, Maine) has announced that the company's South Portland facility has donated its supply of flu vaccines to the State of Maine to help address the shortage and direct the vaccines to Maine residents who need it most.
Agere posts loss on restructuring charges News & Analysis 10/26/2004 Post a comment Agere Systems (Allentown, Pa.) posted a net loss of $127 million, or 7 cents per share, on sales of $439 million in its fourth 2004 fiscal quarter ended September 30th, reflecting $132 million in restructuring charges.
3 steps to budgeting power in CPCI designs News & Analysis 10/25/2004 Post a comment Over the past five years, CompactPCI has become the architecture of choice for equipment makers developing high-availability embedded applications. Its powerful, standards-based, cost-effective computing solutions, as well as hot-swap and high-availability capabilities, make it ideal for communication and military applications.
Dc/dc integration cuts space, time Design How-To 10/25/2004 Post a comment Traditional distributed-power architectures employ several dc/dc power modules, each of which converts the 48-volt bus voltage to such supply-voltage rails as 5, 3.3 and 2.5 V. That configuration, however, poses increasing difficulties in meeting the load requirements of the fast, low-voltage processors, DSPs, ASICs and DDR memories used in next-generation communications equipment designs. Such devices impose stringent requirements on the power supply: very fast transient response, high efficien
ATCA density: hitting the mark Design How-To 10/25/2004 Post a comment The AdvancedTCA (ATCA) architecture is quickly catching on as a viable option for next-generation communication equipment designs. One draw is the ability to develop high-density blades through the use of advanced mezzanine cards (AMCs) that perform complex functions and service large numbers of subscribers.
Intermediate-bus architecture solves power-conversion challenges Design How-To 10/25/2004 Post a comment Voice and data communication service providers use port density and cost per port as key criteria in evaluating carrier-class communications network infrastructure equipment offerings. Equipment manufacturers respond by trying to design and deliver increasingly small, dense and low-cost systems in order to establish and maintain a competitive edge.
'Cool IC' design vital for multi-gigabit system design Design How-To 10/25/2004 Post a comment Gigabit line cards are being tasked with accommodating a plethora of physical-layer transceivers, ranging from octal-type Fast Ethernet versions to copper- and fiber-based Gigabit Ethernet transceivers. At the same time, designers are looking for boards to handle media access control and higher-layer functionality.
Semiconductor strategies for low power consumption Design How-To 10/25/2004 Post a comment Power consumption requirements for embedded systems, especially in automotive applications, are very stringent. Cars consume a lot of power while in full operation and also generate a lot of heat. The dissipation of that heat at high temperatures can become a serious issue, especially when a car is parked in the sun for an extended period. Furthermore, some control units must be capable of being operational even when the engine isn't running. These types of units drain the battery, so minimizing
Digital conversion solves comm equipment power challenges Design How-To 10/25/2004 Post a comment As communication equipment designs become more complex, they require more sophisticated power systems. For example, Fast Ethernet switches developed in the late 1990s required only two supply voltages with less than 75 watts per board. At 3.3 and 2.5 V, the maximum current per output did not exceed 15 amps. Thus, these switches have been well-served by a distributed power architecture (DPA) with dual-output isolated bricks.
Wireless focus: more channels/mW Design How-To 10/25/2004 Post a comment
Wireless basestations and access/aggregation equipment represent infrastructure applications in which power and heat management are critical design parameters. Basestations operate in extreme ambient temperature environments, and digital subscriber line access multiplexers (DSLAMs), mini-DSLAMs, digital loop carriers and related access equipment need to stay cool to remain reliable.
Power management still critical for comms infrastructure too News & Analysis 10/25/2004 Post a comment When you mention the phrase power management, the first thought that crosses most communications designers' minds is a way to draw less power on a mobile device. But power management plays an equally important role in infrastructure, where increased channel counts, higher-speed processing architectures, cooling issues and increased line card density are becoming a more vital concern for operators worldwide.
Line Driver For VDSL DMT - low power and high fidelity Product News 10/22/2004 Post a comment Intersil announced a high-speed dual operational amplifier designed for use with Very-high-bit-rate Digital Subscriber Line (VDSL) and Asymmetric Digital Subscriber Line (ADSL) line driving in Discrete Multi-Tone (DMT) based solutions aimed at video-on-demand service applications.
Power switch with fast PWM optimizes motor control Product News 10/21/2004 Post a comment Freescale Semiconductor's 4-milliohm MC33981 eXtreme Switch with fast pulse width modulation (PWM)controller, optimized for DC motors, is designed to replace electromechanical relays and discrete devices in cooling fans, fuel pumps and automotive applications while reducing board space and increasing system reliability.
Thin Digital Amplifiers from D2Audio are Customizable Product News 10/20/2004 Post a comment D2Audio Corp.'s MXR and MXM amplifiers offer the best of both worlds the sound quality and performance level of top analog amplifiers, and the intelligent features, size, weight, power and space advantages only possible in a digital amplifier.
Converter boosts one-cell battery voltage to 50V News & Analysis 10/18/2004 Post a comment Handheld instruments often require a voltage far above the internal analog supply rail. But no single IC at this time is capable of converting a single-cell output to 50V, writes a Maxim applications expert. From the Planet Analog magazine folio, he offers a 2-stage step-up converter will handle the task.
TI posts gain but says inventory issues will linger News & Analysis 10/18/2004 Post a comment Texas Instruments Inc. (Dallas) reported third-quarter earnings of $563 million on revenue of $3.25 billion, up from $441 million on revenue of $3.24 billion the previous quarter and $447 million on sales of $2.5 billion in the year-ago third quarter.
Digital signal controllers ease motorized appliance design News & Analysis 10/18/2004 Post a comment To meet today's home appliance regulatory requirements for efficient energy and water usage, sophisticated motor controllers are critical. They must run a variety of motors while modulating torque and speed to handle varying load conditions. A brushless motor packs the same horsepower into a smaller, lighter package. It accelerates faster due to inherently lighter rotor construction. Texas Instruments' engineers a solution based on a digital signal processor (DSP) that addresses this kind of fle
Hot Swap Controller Includes On-Chip A/D Converter Product News 10/18/2004 Post a comment Linear Technology Corp.'s LTC4260, a positive high voltage Hot Swap controller that features an on-chip 8-bit A/D converter and I2C
compatible interface, allows for sophisticated power monitoring by measuring card voltages and currents as well as recording past and present fault conditions.
Universal supervisor ICs tout quick time-to-market Product News 10/18/2004 Post a comment Touting an "innovative manufacturing flow" for faster time-to-market, STMicroelectronics has 24 industry-standard supervisor chips (total 46 parts numbers) that the company can deliver in as little as four weeks, compared to the typical 12 or more weeks of processing and assembly time required by other suppliers. These 5- and 3/3.3-volt supervisors are 100% pin-compatible drop-ins to parts commonly available throughout the industry.