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posted in August 2005
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A Multi-Output Power IC to Power Multi-Rail Applications
Design How-To  
8/31/2005   Post a comment
Using a multiple-output power IC to power a multiple-rail application, such as an FPGA and/or DSP, is highly desirable because of its simplicity. Due to its flexibility, a controller-based multi-rail power IC can incorporates two controllers and a linear regulator. A Texas Instruments engineer shows how this design allows the user to optimize the solution size to accommodate the wide-range of possible voltages and currents associated with DSP and FPGA power solutions.
Designing with ultra-low voltage MOSFET arrays
Design How-To  
8/31/2005   Post a comment
Using a floating gate charge, Advanced Linear Devices has perfected a way of programming the threshold voltages of MOSFET arrays. With something close to a zero-volt threshold, MOSFET switches can be turned one-or-off with a hare's breath of power. But this will force designers of portable circuits to think differently about the design of their amplifiers, voltage references and current mirrors, suggests developer Robert Chao. This article offers some insights and suggestions.
Make power management plans for the coming wave of consumer electronics
Design How-To  
8/31/2005   Post a comment
For portable consumer applications, power-optimized, mixed-signal solutions are critical for providing the needed system power management to maximize battery life. Here's what you need to know to keep ahead of consumer electronics power requirements.
LED driver claims world on a string
Product News  
8/31/2005   Post a comment
Austriamicrosystems bills its AS3691 chip as the world's first high-current with high-precision LED driver. "The IC's absolute current accuracy of 0.5 percent allows for highly accurate brightness settings and is thus ideal for supporting sophisticated color management applications like LCD monitors with RGB backlighting," said Ronald Tingl, marketing manager for Power Management. The AS3691 includes four independent high precision current sources each capable of sinking 400 mA (for four strings
Codec expands portable features
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8/31/2005   Post a comment
Wolfson Microelectronics plc introduced a stereo codec for portable multimedia apps, including cellular phones — that is said to integrate high-quality audio performance and enhanced mixing capabilities, with low-power consumption.
AccelChip partnering with British design services provider
News & Analysis  
8/31/2005   Post a comment
AccelChip is partnering with British design services provider Systems4Silicon in an effort to bolster the company's design service capacity.
Fairchild reiterates Q3 guidance
News & Analysis  
8/31/2005   Post a comment
Fairchild Semiconductor has reiterated guidance for third quarter 2005 sales to be flat and gross margin to flat to slightly higher sequentially.
Intel-led alliance stirs angst over future wireless spec
News & Analysis  
8/31/2005   Post a comment
Intel has convinced Broadcom, Atheros and Marvell to join forces outside of an IEEE wireless LAN standards group to develop an interoperable physical and media access control layer.
Beginning a new series: The most common mistakes in analog macro design
Design How-To  
8/31/2005   Post a comment
IC designer Ken Boorom has seen a number of design weaknesses that even experienced IC designers and managers overlook. Because the same mistakes are made by different engineers working for different companies, Ken believes it would be worthwhile to compile a list of them. Invariably, the problems are related to the way that the analog IPs interact with their environment. Planet Analog invites you to join us for an informative series on all the little gotchas (sometimes big ones) that come in
Semtech blames cautious customers for mixed 2Q results
News & Analysis  
8/30/2005   Post a comment
Semtech reported fiscal second quarter 2006 net income of $7.4 million, or 10 cents per diluted share, down 57 percent from the net income of $17.4 million, or 22 cents per diluted share, for the second quarter of fiscal 2005.
Buck controller IC has full complement of power management features for networking
Product News  
8/30/2005   Post a comment
International Rectifier introduces a high-performance, dual output pulse-width modulator driver IC for synchronous buck DC/DC converters used in networking and communications systems.
Tracker/sequencer ICs ease basic power-up designs
Product News  
8/30/2005   Post a comment
Maxim Integrated Products' MAX6877-MAX6883 are dual/triple power-supply trackers/sequencers for controlling power-up and power-down of up to three rails. They're the company's first hardware programmable (versus programmable memory) trackers and sequencers for cost-effective design in simplified power management systems. Users adjust key performance parameters such as voltage thresholds, slew rates, and timing parameters with (external) resistors and capacitors.
Online tool speeds amp selection
Product News  
8/30/2005   Post a comment
Analog Devices Inc.'s amplifier parametric evaluation tool is said to create a virtual evaluation board environment to remove the guesswork from selecting and implementing operational amplifiers.
16-bit converter targets precision apps
Product News  
8/30/2005   Post a comment
This 16-bit, 10 Msamples/second delta-sigma analog-to-digital converter from Texas Instruments Inc. features 86 dB signal-to-noise ratio and 95 dB spurious-free dynamic range over a 5-MHz bandwidth.
Regulator delivers the boost to bias LCDs
Product News  
8/30/2005   Post a comment
Allegro MicroSystems' A8483 is a 1.2 MHz step-up regulator chip suited for general purpose battery-powered work as well as such applications as bias/backlighting supplies for plasma and liquid-crystal displays. Other applications include cellular phones, PDAs, camcorders, personal stereos, MP3 players, cameras, and mobile GPS systems.
Ramtron acquires Goal Semiconductor
News & Analysis  
8/30/2005   Post a comment
Nonvolatile ferroelectric random access memory supplier Ramtron International Corp. has acquired fabless semiconductor supplier Goal Semiconductor Inc., for $7.6 million in cash and stock.
Startup introduces 'analog virtual prototyping'
Product News  
8/29/2005   Post a comment
Promising to bring analog IC layouts into the design cycle early, startup Accelicon Technologies has introduced a technology it calls "analog virtual prototyping."
Decoder boosts compatibility between video formats
Product News  
8/29/2005   Post a comment
National Semiconductor Corp.'s video decoder is said to increase compatibility between different video standards — allowing consumers to output video directly from DVD players, gaming devices and other devices to their PC monitors.
How to integrate 3.3 and 5.5V analog and digital supplies
Design How-To  
8/28/2005   Post a comment
Decentralized control units and field bus components have analog and digital components that need both 5.5V and 3V -- with little fluctuation and disturbances in very limited real-estate. Here's one way to achieve all these requirements.
SigmaTel completes acquisition of Protocom
News & Analysis  
8/26/2005   Post a comment
Analog and mixed-signal semiconductor supplier SigmaTel Inc. has finalized the acquisition of Protocom Corp., a privately held semiconductor supplier of multi-function imaging chips.
Production FlexRay controller enables advanced by-wire automotive applications
Product News  
8/26/2005   Post a comment
Freescale device provides high bandwidth and deterministic, fault-tolerant data transmission for chassis control, body electronics, and power train uses.
Cypress, Cavium Networks ally on network solutions
News & Analysis  
8/26/2005   Post a comment
Network solutions provider Cavium Networks will team with Cypress Semiconductor Corp. to provide joint solutions for next-generation networking systems.
DSPs give hands-free car phones needed clarity
Design How-To  
8/26/2005   Post a comment
Formula One and NASCAR automotive communications technology hits the streets.
Power IC with charger boosts management potential
Product News  
8/26/2005   Post a comment
Summit Microelectronics' multi-output SMB122, a second-generation power management IC equally at home in either single lithium-ion cell or AC-input applications, brings power regulation and advanced power control to the designer's table. Indeed, this chip is billed as the world's first multi-output power IC that includes a fully programmable battery charger.
12-bit A/D converters conserve board space
Product News  
8/26/2005   Post a comment
Maxim Integrated Products Inc.'s 12-bit family of tiny, high-speed, analog-to-digital converters feature two true-differential inputs, 3 V or 5 V single-supply operation, and a SPI-/QSPI-/MICROWIRE-compatible interface.
Opinion: Medical electronics represents strong growth opportunity for ICs
Product News  
8/26/2005   Post a comment
Home diagnostics will propel growth in the medical electronics sector, which is expected to reach $3.5 billion worldwide by 2010, according to Databeans.
Agere names Peter Kelly CFO
News & Analysis  
8/25/2005   Post a comment
Agere Systems has named Peter Kelly chief financial officer, replacing John Gamble, who accepted a position at another company.
Medical Electronics Pumping Ahead
Design How-To  
8/25/2005   Post a comment
According to the Databeans latest study, the home medical market presents a large opportunity for semiconductor manufacturers, especially chips for precision amplifiers, data converters, analog power management, and RISC processors.
JFET in-amp housed in MSOP
Product News  
8/24/2005   Post a comment
Analog Devices Inc. said it's breaking ground with its first junction field effect transistor-input instrumentation amplifier, which is the smallest in the industry and offers the highest common mode rejection ratio.
First programmable, multi-output power IC
Product News  
8/24/2005   Post a comment
Summit Microelectronics says it has the first multi-output power IC that has programmable battery charging. This is worth a look.
Focus on A/D converters: Parts boost ac performance, tap less power
Product News  
8/24/2005   Post a comment
The latest analog-to-digital converters from Analog Devices, Atmel, Linear Technology, Maxim Integrated Products, National Semiconductor and Texas Instruments provide stronger ac performance, lower power consumption and smaller packages, all while operating at faster rates.
Stand alone charger expands options
Product News  
8/24/2005   Post a comment
The LTC4076 and LTC4077 are Linear Technology’s second and third standalone linear lithium-ion battery charger chips with dual-input USB and AC adapter ports and offer designers various options to the company's earlier released LTC4075/X. The main differences between the LTC4075/X and the second and third offerings are in available current from the USB port and the devices' charge termination capabilities.
Single-ended to differential buffer serves single-supply A/Ds
News & Analysis  
8/24/2005   Post a comment
Differential inputs of an A/D converter must be balanced to cancel even order harmonics and common mode noise. Systems often require this signal translation to take place without injecting dc bias currents back into the signal source. Analog Devices' engineers offer a buffer circuit for single-ended to differential signal conversion.
Too good to be true, but why not shown?
Blog  
8/24/2005   Post a comment
The difference amplifier circuit seemed to work well; it was nice and linear in fact. But there was something not quite right: There would be attenuation at certain frequencies. Not very much, but troublesome nonetheless. It had something to do with balancing the resistors in the compensation loop, Bill Klein concluded. Watch him go to work on "A Call We Took Last Week."
Battery IC extends charge to cut parts
Product News  
8/23/2005   Post a comment
Advanced Analogic Technologies' AAT3687 BatteryManager, for single-cell lithium-ion/polymer batteries, is designed to further cut external parts count in portable consumer applications.
USB bus-powered devices put an end to Wall Warts
Design How-To  
8/23/2005   Post a comment
“Every system that supplies power must incorporate some kind of power limits. You don’t want your computer to go dark when you plug in a mouse,” writes a Cypress Semiconductor engineer in this month's issue of the Planet Analog magazine folio. On the other hand, plugging USB disk drive could generate some hefty current surges. Let's think about eliminating those Wall Warts, he says.
Circuit simulation tool simplifies clock designs
Product News  
8/23/2005   Post a comment
Analog Devices Inc. claims engineers can now create complete, robust timing solutions in minutes with its ADIsimCLK clock IC design and simulation tool and three new clock ICs.
Regulators peak for high-current systems
Product News  
8/23/2005   Post a comment
National Semiconductor's LM2716 buck-boost and LM2717 buck-buck, two regulators designed for high-current applications, feature greater than 90 percent efficiency over a wide load range for extended battery life in embedded computer systems, set-top boxes, portable Internet access devices, general point-of-load architectures, and monitors and TVs, including TFT/LCD flat-panel displays.
A fast, accurate, LC compliant DC-DC boost regulator…Is it possible?
Design How-To  
8/23/2005   Post a comment
Circuit integration is a major trend in the electronics industry. For power management designs, the frequency compensation circuit is a critical roadblock since it is off-chip. A user-friendly, accurate, fast, highly LC-tolerant supply circuit is therefore in high demand. Here's a proposed bypass scheme that offers just about everything needed.
Three-in-one battery charger IC
Product News  
8/22/2005   Post a comment
A battery charger from AnalogicTech combines a charging device, reverse blocking diode, and current sensing circuit. It supports charging currents up to 1.5A across an input voltage range of 4.0 to 5.5V.
TFT-LCD regulator offers a cool way out
Product News  
8/22/2005   Post a comment
Touting extremely high efficiency and thus cooler system operation, the EL7585A quad-output regulator from Intersil provides a highly integrated power source for large (19 inches and greater) thin-film-transistor liquid-crystal displays (TFT-LCDs) of the kind used in TVs and desktop monitors. Its so-called boost supply boasts the industry’s largest integrated field-effect transistor for this application, providing up to 3.5 amps.
Voice chips enable hands-free communication
Product News  
8/22/2005   Post a comment
Zarlink Semiconductor unveiled voice processing chips aimed at improving voice quality and reducing noise in hands-free communication devices.
LED driver with PFC simplifies street lighting
Product News  
8/19/2005   Post a comment
Supertex' HV9931, an off-line driver for single high-brightness LEDs, includes a power factor correction stage that thus suits the chip to traffic signal, street lamp and decorative lighting applications. The fixed-frequency buckboost-buck design features built-in dimming capability.
D/A converters offer robust performance
Product News  
8/19/2005   Post a comment
Maxim Integrated Products Inc. introduced 10 low-power, high-dynamic-performance, 12-/14-/16-bit, dual digital-to-analog converters (D/A converters) with update rates up to 500 Megasamples/second.
Ten steps to a low cost, high performance switcher to power your FPGA
Design How-To  
8/18/2005   Post a comment
A hysteretic buck regulator circuit is shown along with a 10 step design procedure enabling you to quickly design a high performance switcher.
Agilent EEsof completes Eagleware-Elanix acquisition
News & Analysis  
8/18/2005   Post a comment
Neil Martin (shown) of Agilent Technologies's EEsof EDA division says the acquisition of Eagleware-Elanix represents a strategic change for the leading supplier of RF EDA tools.
Power switches crow super current rating
Product News  
8/18/2005   Post a comment
Micrel Inc. launched a family of high-current power switches for PCs, set-top-boxes, game controllers and USB host devices, as well as the latest printers, which all require current limiting protection against short circuits.
PoE controller adds DC/DC
Product News  
8/18/2005   Post a comment
Texas Instruments' third generation power-over-Ethernet device, the TPS23750, combines the functionality of the company's TPS2375 powered device (PD) controller with a primary side DC/DC pulse-width modulation (PWM) controller. Thus it effectively manages device discovery and classification as well as delivery of direct-current (DC) power to an end appliance to ease implementation of Ethernet-powered systems such as IP phones, security networks, and RFID scanners. Relatively few external compone
30ON Semi’s ESD suppression devices meet toughest protection standards
Product News  
8/18/2005   Post a comment
ON Semiconductor has introduced the ESD (micro ESD) dual series of high performance, micro-packaged electro static discharge (ESD) protection diodes. The ESD dual series is designed to protect voltage sensitive components for two lines in applications that demand minimal board space and low profiles, such as cell phones, MP3 players and portable gaming systems.
TDK Semi changes name to Teridian
News & Analysis  
8/17/2005   Post a comment
Mixed-signal semiconductor supplier TDK Semiconductor Corp., has changed its name to Teridian Semiconductor Corp., effective immediately.
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