87 results found, displaying items 1 - 20

HD Medical Group Ltd. has selected the QF4A512 four-channel programmable signal converter from Quickfilter Technologies for use in the ViScope 100 cardiac anomaly indicator. Similar in size and shape to a PDA, the ViScope 100 allows physicians to detect anomalies relating to the mechanical functioning of the heart.

Pioneer Electronics has chosen the WM8740 high-performance stereo digital-to-analog converter (DAC) from Wolfson Microelectronics for use in Pioneer’s latest Blu-ray home theater disc player. Pioneer said the player (model BDP-LX71 in the EU and Japan and model BDP-05FD in North America) aims to outperform current desktop players and bring a true cinema experience to the home.

The latest version of Accellera’s Verilog-Analog Mixed-Signal (AMS) standard, Verilog-AMS 2.3, unifies the standard’s previous version with IEEE Std. 1364-2005, the Verilog hardware description language (HDL) standard. Verilog-AMS 2.3 enables users to develop standard and tightly integrated Verilog-AMS modules, and allows EDA software tool developers to implement EDA tools without ambiguities in the language interpretation.

One of the perks of being an Electronic Design editor is that we get lots of books that publishers would like us to review. The last time I went through the stack, A Student’s Guide to Maxwell’s Equations by Daniel Fleisch caught my eye. I settled down in the nearest chair and started to skim. Then I slowed down and started to read. Professor Fleisch is a great scientific communicator.

Hypothesis: Doing away with the code requirement last March has completed a rejuvenation of ham radio that was triggered by the World Trade Center attacks and Katrina. I’m looking for reader comments yea and nay.

The Global Semiconductor Alliance’s Analog/Mixed-Signal/Radio Frequency (AMS/RF) Process Checklist Version 1.0 aims to make it easier for semiconductor companies to obtain information on an AMS/RF foundry process. It specifically targets the information need to evaluate a foundry’s AMS/RF process and determine if it addresses all of the company’s needs.

Designers can construct a triangular additive dither that only requires two pulse-width modulators and an XOR gate. However, it may be possible to dither without any additional hardware at all.

The HVVFET is the brainchild of HVVi chief technology officer Bob Davies, one of the key inventors of LDMOS 15 years ago. Devices utilize a vertical FET structure (something that’s been tried before) because it provides higher power density than lateral devices. The problem with those early efforts were the parasitics associated with silicon substrates. That limited operating frequencies. For HVVi, Davies came up with a novel edge termination structure and a unique gate-drain ...

You don’t want to burden your design with the extra cost of a higher-resolution analog-to-digital converter (ADC). But because of board-space limitations, adding an external ADC may not be acceptable. Fortunately, you can get 10-bit performance with an 8-bit ADC by implementing triangular dither.

Check out these additional letters to and answers from electronics guru Bob Pease.

Only two wires are needed to connect the 105-Msample/s LTC2274 ADC to an FPGA, reducing board space and decreasing noise and crosstalk. The serial interface can reach 2.1 Gbits/s, and it’s compatible with FPGAs like the Xilinx Rocket IO, Altera Stratix II GX I/O, and Lattice ECP2M I/O.

Several MOSFETs with higher breakdown voltages have hit the market. Some are rated for 40, 60, and 80 V, which is 10 V higher than existing devices in their respective classes, with significantly lower conduction losses. Others are rated for 900 V, again with improved conduction loss specs. At the high end of the breakdownvoltage range, Infineon Technologies is pushing the envelope with the industry’s first 900-V superjunction MOSFETs ...

You don’t want to burden your design with the extra cost of a higher-resolution ADC. And because of board-space limitations, adding an external ADC may not be acceptable. Fortunately, you can get 10-bit performance with an 8-bit ADC by averaging multiple samples. This process is called oversampling.

High-side current-sense amplifiers are used in a wide variety of applications where reliability and accuracy are paramount concerns. In computer notebooks, these devices monitor the battery’s charge and discharge currents, as well as currents in USB ports and many other supply rails that may need to be powered down to control heating and power dissipation.

Designed in collaboration with SiRF Technology Inc., austriamicrosystems’ new AS3650 power and audio management unit is an excellent fit for personal navigation devices (PNDs) using SiRF’s navigation processors. The AS3650 is a highly integrated device that includes power management, battery management, linear and USB charging, a backlight driver for various screen sizes, and a touch-screen interface.

Maxim's MAX2120 direct-conversion tuner receives QPSK signals in the 925- to 2150-MHz range and downconverts them to baseband for demodulation.

The inverting MCP1401 and the non-inverting MCP1402 single-output MOSFET drivers from Microchip Technology are rated for a peak output current of 0.5 A over a wide operating range of 4.5 to 18 V.

This not-so-little jewel has 2072 pages and weighs 11 lbs. (yes, I actually weighed it). My initial reaction was that I don't have much to do with broadcast standards or technology, but after I read the book I found it was a fabulous reference on electronics, wireless, and communications in general...

• Precision DC motor speed controller
• Voltage-To-Current Converter Works From A Single-Supply Rail
• Control circuit keeps dc motor running at constant speed
• Simple Circuit Maintains Water Level Between Two Preset Limits
• Ham Radio's Rejuvenation