Random-data generator facilitates eye diagram test News & Analysis 11/17/2004 Post a comment Communications-systems engineers usually have access to the sophisticated test equipment required to measure and analyze the bit-error rate for a communications channel, but what about the poor bench engineer? writes this Max applications expert. Here's a simple logic circuit that's good for stimulating data patterns at up to 62.5 Mbits/s.
Arming yourself with nanoWatt technology tricks Design How-To 11/17/2004 Post a comment PDAs are a great example of where power-management sophistication is improving rapidly, writes Microchip Technology's famous applications guru. But the battery-powered equipment requirements are increasingly dependent on firmware/software tricks — like 2-clock start ups — with the microcontroller-based processing unit. This article offers insights on improving efficiency.
Kung Hei fat Choy: Financial analyst likes what he sees in Chinese handsets Blog 11/17/2004 Post a comment Here's some interesting news in the analog IC supply chain: Our friend Doug Freedman at American Technology Research has a "buy" recommendation on Analog Devices. While ATE and digital camera markets are bland, he foresees an upturn in the Asian cellular handset market after the Chinese New Years. Freedman believes the company is working down its inventories and that its order rates look solid. The unedited text of his remarks follow here:
Digital Control IC - for analog power supplies Product News 11/17/2004 Post a comment Microchip announced a sophisticated power supply pulse width modulation (PWM) controller. The MCP1630 enables power-system designers to add precision control, digital communication and programmability to their designs. The device consists of a high-speed comparator with a high-performance error amplifier and a PWM latch to perform the analog power-supply PWM function. When used with a microcontroller, it supports the development of high-speed, intelligent power-system controllers.
First fully integrated regulators optimized for SOC + DDR apps Product News 11/17/2004 Post a comment California Micro Devices touts its CM3132 and CM3121 as the industry's first family of fully integrated, all linear regulator solutions optimized for powering SOCs (systems-on-chip) and DDR (double data rate) memory in digital consumer electronics and PC peripherals. They're also the industry's lowest cost and smallest footprint power solutions, according to the company, replacing multiple discrete regulators and eliminating the need for external FETs and inductors.
Boost converter, ideal for high current LED driver Product News 11/16/2004 Post a comment LTC offers a current mode, fixed frequency step-up DC/DC converter with an internal 3A, 42V switch. It operates from an input voltage range of 2.5V to 24V making it suitable for applications with input sources ranging from a single cell Li-Ion to a 20V wall adapter.
Stand-alone charger/regulator powers portables Product News 11/16/2004 Post a comment Linear Technology's stand-alone (no microcontroller) LTC4063, in a 10-lead, 3-by-3 mm DFN package, contains a single-cell lithium-ion battery charger and a low-dropout (LDO) regulator that delivers up to 100 mA at 1.2 to 2.4 volts for PDA, digital camera and portable test and measurement equipment. Working from a 4.3- to 8-volt input, the battery charger can deliver up to 1 amp.
New technologies in high density dc-dc converters News & Analysis 11/15/2004 Post a comment The increasing demand for distributed power systems, leads to a focus in the implementation of a high efficiency, high power density, board mounted DC-DC converters. The task becomes even more challenging for low power high efficiency converters, which needs high power density.
A/D-Wandler mit hoher Auflösung und Bandbreite News & Analysis 11/15/2004 Post a comment Den 24-Bit-A/D-Wandler mit der industrieweit größten Bandbreite hat Texas Instruments nach eigenen Angaben vorgestellt. Damit will das Unternehmen neue Anwendungen in Mess- und Medizintechnik, Industrieelektronik und Automobiltechnik ermöglichen.
Smart Power Design How-To 11/14/2004 Post a comment The modern cell phone has become a pocket media center, how anyone gets more than 15 minutes of battery life out of such a contraption is one of the most significant engineering challenges of the decade. Read what Steve Ohr says are the significant architectures and techniques Editor from the recent introductions.
Infineon forms software group in India News & Analysis 11/11/2004 Post a comment Attempting to keep up with its rivals, Infineon Technologies AG (Munich) has announced it would set up a corporate software group in India, where the semiconductor supplier already has a research and development center.
The Missing Piece to the Power Quality Puzzle Design How-To 11/11/2004 Post a comment The GTT (Ground Transient Terminator) developed by Chicago based 9 Corporation is promoted as "The Missing Piece to the Power Quality Puzzle." But truly how effective is it and does it have a place in America's power quality arena?
High power switches meet the 1-watt initiative Product News 11/11/2004 Post a comment With expanded power capability, three new highly integrated off-line switches from Fairchild Semiconductor, in the company's Green FPS series, are suited to 100-250 watt switchmode supplies for TV, DVD, and plasma displays. Meeting the demand for so-called green applications at these higher powers, the devices also satisfy the International Energy Agency's "1-Watt Initiative" (aimed at reducing power losses to 1 watt during standby operation).
The Reversible Computing Challenge Power DesignLine Blog 11/11/2004 Post a comment What are the limits to power efficiency? Good power management strategies are important, but ultimately, they are limited by the energy dissipated by individual operations. Read what an expert, Dr Michael Frank, thinks about this critically important issue in his first blog for Power Management DesignLine.
The Reversible Computing Challenge; what it means to you Design How-To 11/11/2004 Post a comment What are the ultimate limits to the power efficiency of computers? Most power management techniques are based on turning off unused components, or on heterogeneously adjusting device thresholds, frequencies or voltages so as to meet latency constraints. Dr. Michael Frank tells you how to understand the intricacies and what it will mean to you.
Buck regulator touts size, speed advantages for telecom Product News 11/10/2004 Post a comment National Semiconductor's LM5010 is a 75-volt buck regulator with all the functions needed to implement a power management solution for supplying in excess of 1 amp for telecom and industrial applications. The LM5010, whose output is adjustable from 2.5 to Vin-2 volts, complements the company's LM5007, a 75-volt, 500 mA regulator, and, according to the company, features new high-frequency control circuitry that minimizes the number and size of external filtering components and boosts t
Wide-bandwidth switches support portable USB designs News & Analysis 11/10/2004 Post a comment USB OTG will provide higher data throughput (12Mbits/s) than serial I/Os such as UART outputs, says Fairchild's Jeff Ju in the November issue of Planet Analog magazine. For aesthetic design purposes, analog switches can also be used for pin sharing between (say) USB I/Os and audio headphone outputs. By doing this sharing, bulky headphone connectors can be replaced by small serial data I/Os for even slimmer design, Ju says. All this requires — guess what — analog switch bandwidth.
National Semiconductor adds LVDS components Product News 11/10/2004 Post a comment A dual 18-bit serializer, crosspoint switch and repeater with failsafe extend the reach and drive of the high-speed interfaces. Cables and backplanes introduce losses that create inter-symbol interference (ISI), deterministic jitter and reduce interconnect performance. Programmable signal pre-emphasis up to 6dB that actually reduces ISI jitter, dramatically extending interconnect speed and distance.
Texas Instruments ups sample rate on industrial measurement ADCs Product News 11/9/2004 Post a comment Texas Instruments will use the electronica convention this week to announce a data converter with extremely high resolution and a record-breaking sample rate. Targeted at industrial applications like weight scales and vibration analysis, the ADS1271 offers a 24-bit resolution with dc accuracy. But — unlike other data converters with this kind of dc accuracy — this device offers a 50 kHz sampling rate. Steve Ohr generated this report.
Portable power: where does it fit in your design? Power DesignLine Blog 11/9/2004 Post a comment Most design attention is devoted to the system's processor architecture, I/O, and all the functional blocks that make up a portable system. But the consequences of a poorly performing power system can be devastating. Read the thoughts from TI's Dave Heacock about this important issue.
TI ups sample rate on ADCs News & Analysis 11/9/2004 Post a comment Texas Instruments Inc. (Dallas) plans to introduce at the Electronic show in Munich this week a data converter combining 24-bit resolution and a record-breaking 50 kHz sample rate.
Neuer Analog-Fertigungsprozess befreit von Kompromissen News & Analysis 11/9/2004 Post a comment Mit einem neuen Halbleiter-Fertigungsprozess schlägt Analog Devices eine Brücke zwischen CMOS- und Bipolartechnik. Der 'iCMOS' genannte Prozess ist die Basis für Hochvolt-Analogbausteine mit hoher Signalauflösung in verrauschten Umgebungen. Gleichzeitig eröffnet der Prozess auch Hochvolt-Schaltungen eine Möglichkeit zur Skalierung.
Under the Hood of a Tablet PC: The analog side of the story Teardown 11/8/2004 Post a comment Seeking a more natural format for on-the-go computing with a slate-like appliance, the HP/Compaq TC1000 still allows docking to a traditional keyboard for a standard a notebook use model. David Carey goes under the hood to find a mix of supply voltages - and a small arsenal power management devices to support them.
Starter Kits Enable Designers to Build Complex Audio Analog Circuits Product News 11/8/2004 Post a comment In a move intended to give designers a range of prepackaged solutions for building complex audio analog circuits, Anadigm launched the first of a series of configurable analog starter kits that include ready-to-use EDA files, source code for dynamic configuration, and extensive step-by-step instructions for implementing the circuit in a field programmable analog array (FPAA).
Blog Doing Math in FPGAs Tom Burke 15 comments For a recent project, I explored doing "real" (that is, non-integer) math on a Spartan 3 FPGA. FPGAs, by their nature, do integer math. That is, there's no floating-point ...