Content posted in January 2006
CMOS MEMS: Revolution in Semiconductor Design
Articles 1/29/2006 Post a comment
MEMS--micro electromechanical systems, usually fabricated in silicon--offer both great promise and great risk. Tens of millions have already been shipped for automotive airbag accelerometers, RF transmit/receive switches, and even signal filters, and well as other transducers.
In this Guest Column, Ken Gabriel of Akustica, a developer of MEMS-based microphone chips, discusses some process limitations and how they are being overcome, so that low-cost silicon fabrication technology can be u
12-bit A/D converters tout low power
Articles 1/24/2006 Post a comment
Austriamicrosystems today launched a family of fully differential 12-bit, 8-channel, 400 ksamples/s, low power analog-to-digital (A/D) converters for battery-powered remote sensor and data-acquisition devices.
Compensation stabilizes linear regulators
Articles 1/24/2006 1 comment
Stable regulation of output voltage is an operational imperative of linear regulators. This article provides a practical, straightforward look at linear regulator regulation, stability, and compensation.
No Need to Fear: SEPIC Outperforms the Flyback
Articles 1/23/2006 1 comment
This apples-to-apples comparison of SEPIC versus flyback dc/dc converter topologies is not based only on simulation, but on actual circuits. It's revealing, illuminating, and informative, if power-supplies are your concern. And even if your specifics are different, this article will help you understand the issues and figures of merit.
Audio amplifiers cut power consumption
Articles 1/23/2006 Post a comment
National Semiconductor Corp. expanded its ceramic speaker driver family today with two Boomer audio power amplifiers in tiny packages that are said to provide high capacitive loads for portable applications like cell phones, smartphones, and notebook computers.
Why smart people fail in interviews
Articles 1/20/2006 Post a comment
January signals the start of a new year, and for many, the start of serious job hunting. This may be due to "involuntary" departure from an existing job, or the sense that it's "time to move on." Whatever the reason, the key job-hunt skill of interviewing is not something that most engineers have a lot of experience or practice at doing. In this Guest Column, Gary Fowler of Analog Solutions--a previous Planet Analog contributor--offers some down-to-Earth advice.
Bill Schweber, Editor, Plan
Audio subsystem houses Class D speaker
Articles 1/19/2006 Post a comment
National Semiconductor Corp.'s audio subsystem with a mono Class D speaker driver is said to integrate all the analog and digital functions needed for smart phones and voice-over-Internet Protocol (VoIP) phones.
Fast switches put the reins on power draw
Articles 1/18/2006 Post a comment
Key features of recently released analog switches that can route audio signals from a variety of sources for portable applications from Analog Devices, Austriamicrosystems, Fairchild Semiconductor, Intersil, Maxim Integrated Products, Vishay Intertechnology and Texas Instruments include, fast switching time, low on resistance R(ON), low power consumption, dual and bidirectional versions and tiny packages.
Class D amp provides high audio power output
Articles 1/17/2006 Post a comment
STMicroelectronics unveiled a filterless 3-watt Class D power amplifier today for mobile phones and other portable applications that is said to provide higher audio power output while preserving and extending battery life.
Low power codecs extend battery life
Articles 1/13/2006 Post a comment
Texas Instruments' family of low-noise, stereo codecs with power consumption as low as 14 milliwatts (mW) promise to extend the battery run-time in portable applications like cellular handsets, MP3 players with record functionality and digital still cameras.
Local area network switches protect consumer devices
Articles 1/11/2006 Post a comment
Pericom Semiconductor Corp.'s pair of mutliplexer/demultiplexer Gigabit Ethernet local area network (LAN) switches are said to sport the highest level of electrostatic discharge (ESD) protection for susceptible products ranging from PC's to televisions.
Texas Instruments micro-power op amp targets battery-powered applications
Articles 1/10/2006 Post a comment
Texas Instruments has introduced a family of precision, micro-power op amps from the company's Burr-Brown product line. The OPA379 family operates within a 1.8 V to 5.5 V supply voltage range and features high performance single-supply operation, very low quiescent current (2.9 A) and low noise (80 nV/rtHz) relative to the quiescent current.
Operational amplifier integrates cooling devices
Articles 1/6/2006 Post a comment
Power Amp Design's operational amplifier boasts rail-to-rail operation at both the inputs and the output combined with a power supply voltage range from ±8 volts to ±50 V (100 volt total supply voltage), and an output range up to 15 amps.
There’s a further cool thing you can do with a spreadsheet that most SPICEs can’t. That’s to use the spreadsheet ‘solver’ functionality to adjust component values in the search for a better-fitting circuit – or even to find a set of component values for a circuit you can’t otherwise design.
Infineon MOSFETs have been embedded into PC boards by Schweizer Electronic AG
You now need to adjust component values to achieve some system goal, such as predefined frequency response or time behaviour, and there’s no closed method for working out those values.
As a member of the electronics design community, I am angry and disappointed with the recent deaths of 346 people due to the Boeing MAX 8 design
The theoretical advantages of GaN-based power transistors are now being realized in mainstream system designs. Power supplies for data centers and telecom switching racks are two application areas where GaN transistors show significant improvement in comparison to systems using best-in-class Silicon-based Superjunction devices.