Newcomer develops high-speed op amps Product News 8/17/2005 Post a comment ON Semiconductor threw its hat in the high-speed operational amplifier ring today with four high-speed devices aimed at low power video applications like set-top boxes and security video.
Streamlining power delivery systems for servers Design How-To 8/17/2005 Post a comment With the electronic loads totaling 280 watts typical — not worst case — the fan losses are still among the largest. As part of our "power is where you find it" August issue theme, an International Rectifier engineer catalogs the places were compute server card cages and telecomm switching stations burn serious energy.
When your company is for sale... Blog 8/17/2005 Post a comment Agilent's sale of its semiconductor products group (SPG), and the subterfuge that surrounded it, reminded Steve Ohr of the times he spent reassuring a panicky staff what it meant to wear a "for sale" sign. Let's hope the new management will allow SPG employees breath a little easier, he says.
Multiphase PWMs tout high accuracy for non-core apps Product News 8/16/2005 Post a comment Intersil Corporation's two-phase ISL6310 and three-phase ISL6308 pulse width modulation (PWM) controllers with high-current, integrated MOSFET drivers for server and embedded system peripherals tout high-accuracy voltage regulation of the kind typically reserved for processor core applications.
Prema serial 12V-LED driver handles up to three LEDs Product News 8/16/2005 Post a comment Standard light sources such as bulbs are increasingly replaced by LEDs or LED strings. PREMA Semiconductor offers the new constant current driver PR4130 controlling up to three LEDs in series. Even if one or two LEDs are disconnected or short circuited, the current and the brightness remain constant, thus providing a high reliability.
Combo PFC/PWM controller simplifies off-line supplies Product News 8/15/2005 Post a comment ON Semiconductor's NCP1603, a combination power factor correction and pulse width modulation (PFC/PWM) controller with integrated standby and high-voltage startup circuitry, simplifies the design of off-line, AC/DC power supplies. The integrated solution, versus separate PFC and PWM controllers, saves up to 10 additional (external) components. Target applications for this device include notebook and LCD adapters.
How power modules address unique appliance requirements Design How-To 8/15/2005 Post a comment The demand for inverterized drives and brushless DC (BLDC) motors continues to grow in consumer applications. The key to enabling this progress is inverter technology, especially the integrated power module. But what are these techniques and what should you know before applying these smart power designs? Read on.
Analyst says ADI is refocusing DSP business units toward less competitive markets News & Analysis 8/12/2005 Post a comment Though he's decreasing his earnings-per-share estimates on Analog Devices Inc. for its fiscal fourth quarter (and the first quarter of fiscal 2006), Doug Freedman of American Technology Research maintains a "buy" rating on ADI's shares. He's worried about ADI's competition in data converter and DSP markets, but likes the way this company is managing its expenses. If the revenue tide is indeed coming in for analog suppliers, expect this boat to be lifted high. Let's hope the inventory correction
Continuing opportunities benefits analog power management Special Report 8/12/2005 Post a comment The power management market is booming due to the high growth seen in portables. Semiconductor manufacturers have recognized this and seized the opportunities. Databeans says the most successful companies have been able to focus on particular markets. Here's how it all shakes out.
High-voltage EL drivers brighten LCD picture Product News 8/11/2005 Post a comment Supertex's HV841 and the new version of its HV839, for higher brightness, are designed to drive two electroluminescent (EL) lamps with a combined area of 3.5 in2 for backlighting liquid crystal displays (LCDs) and keypads in mobile phones and other portable devices.
Cree reports sales gains for quarter and year News & Analysis 8/11/2005 Post a comment Semiconductor supplier Cree Inc. posted net earnings of $21 million, or 27 cents per share on sales of $98.8 million in its fourth fiscal 2005 quarter ended June 26, compared to $20.9 million, or 28 cents per share on sales of $90.8 million in the year-ago fourth quarter.
LED driver lights five displays Product News 8/11/2005 Post a comment Linear Technology's LTC3208 charge pump-based controller, optimized for single cell lithium-ion cellular applications, can deliver up to 1 amp for driving up to 17 LED elements in five displays. These include the main display (1-4 LEDs); a sub display (1-2 LEDs), RGB (1-3 LEDs), camera (1-4 LEDs), and an auxiliary display (1-4 LEDs).
Linear 16-bit SAR ADC targets high-performance data systems Product News 8/11/2005 Post a comment Designed for advanced, real-time applications in automated test equipment, medical imaging, optical networking, high-speed control loops and high-resolution data acquisition systems, Texas Instruments Incorporated's 16-bit, successive-approximation (SAR) analog-to-digital converter (ADC) offers impressive stability in challenging environments.
Controller expands digital power management Product News 8/11/2005 Post a comment The PS-2606 power system controller from Potentia Semiconductor provides a complete power management solution for up to six non-isolated DC/DC converters and one intermediate bus in telecom, networking, and data storage applications.
This highly integrated chip enables users to digitally program output voltages, sequencing for startup and shutdown, and over-voltage and under-voltage warning and fault thresholds on each power rail.
Predicting runtime for battery fuel gauges Design How-To 8/10/2005 Post a comment Batteries are one of the most misunderstood power sources when it comes to the prediction of remaining system runtime. Find out how to calculate the most accurate information possible for the remaining capacity of a battery.
Triple-output pump powers TFT-LCDs Product News 8/10/2005 Post a comment Advanced Analogic Technologies' AAT2820 is a triple-output charge pump regulator specifically suited to powering TFT LCDs and CCD image sensors in handheld products with lithium-ion/polymer batteries. The chip generates three regulated output voltages from two charge pumps for turn-on gate drive bias (Vpos), turn-off gate voltage bias (Vneg), and logic.
LVDS buffer/repeaters extend signal integrity of FPGAs, ASICs Product News 8/9/2005 Post a comment National Semiconductor Corporation's two new low-power, high-performance buffer/repeaters for low-voltage differential signaling (LVDS) systems extend the signal reach of field-programmable gate arrays (FPGAs) and application specific integrated circuits (ASIC) across backplanes and cables in telecom, datacom, industrial, medical, automotive and office imaging applications.
Low-noise linear regulator powers analog, RF ICs Product News 8/8/2005 Post a comment Designed as a low drop-out linear regulator optimized for powering 100-mA analog and RF signal-path ICs, including low-noise amplifiers, voltage-controlled oscillators and RF receivers in cell phones and similar portable devices, the LP5900 CMOS linear regulator from National Semiconductor Corporation offers ultra-low noise, and high power supply ripple rejection, while consuming a mere 25 microamps.
Digital potentiometers save on space, power Product News 8/8/2005 Post a comment The MAX5481-MAX5484 line of programmable digital potentiometers from Maxim Integrated Products come in two wiper configurations voltage-dividers and variable resisters to replace mechanical potentiometers in a fraction of the required space.
Altera, TI to partner on PCI Express solution News & Analysis 8/8/2005 Post a comment Altera Corp. and Texas Instruments Inc. have announced a partnership to develop a PCI-SIG compliant, low-cost PCI Express solution using Altera's Cyclone II FPGAs and the latest generation TI x1 physical layer (PHY) chip.
Power op-amp IC delivers hybrid performance Product News 8/4/2005 Post a comment Product Review - The PA78 is Apex Microtechnology's first high-voltage, high-speed integrated circuit and marks a turning point of sorts away from hybrid devices for which the company has become well known.
PLL clock generation IC aims to replace crystal oscillators Product News 8/4/2005 Post a comment Designed to replace expensive crystal oscillators for clock generation in a wide variety of consumer and networking applications, ON Semiconductor's new PLL clock generation IC delivers comparable performance, greater design flexibility, and lower cost than crystal oscillators.
Buck regulator-with-LDO boosts portable power Product News 8/4/2005 Post a comment Linear Technology's LTC3448 low-noise, synchronous buck regulator can deliver up to 600 mA at very high efficiency over a wide load for handheld wireless applications using single cell lithium-ion, multi-cell alkaline, and NiMH sources. When output current is greater than 3 mA, the regulator switches at a user-selectable frequency of 1.5 or 2.25 MHz. If output current drops to 3 mA or below, the chip automatically shifts to its low-dropout (linear) regulator.
MAXQ microcontroller drives smart 4-20ma transmitter Design How-To 8/3/2005 Post a comment The 4-20mA current loop offers a common technique for transmitting sensor information in industrial process-monitoring applications. Current loops are particularly useful when the information must travel a long distance to a remote location, since they are relatively insensitive to noise, and their power can be derived from a remotely supplied voltage. A Maxim FAE offers a means of implemented the current loop using a small controller.
How dare you call my girlfriend ugly? Blog 8/2/2005 Post a comment Steve Ohr is continually amazed by the diversity of the feedback he gets from his personal blogs and columns — as well as those of other Planet Analog contributors. In one case, Ohr angered audio component vendors who felt he was being unfairly negative toward Class D amplifiers. In another editorial, this one about the acceptable responses to terrorism, Ohr triggered a lengthy "means-vs.-ends" discussion — as well as number of personal recollections from readers. Here is a little sa
Blog Make a Frequency Plan Tom Burke 17 comments When designing a printed circuit board, you should develop a frequency plan, something that can be easily overlooked. A frequency plan should be one of your first steps ...