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Content posted in January 2006
Audio power amplifiers for digital TVs boast efficiency
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1/30/2006   Post a comment
Texas Instruments Inc.'s Class-D audio power amplifiers are said to feature an easy-to-use layout and low electromagnetic interference to speed the design cycle of medium- and large-screen digital televisions.
Maxim overvoltage protection circuits operate from 5.5V to 72V
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1/30/2006   Post a comment
Maxim introduces the MAX16010-MAX16014 overvoltage protection circuits designed for systems with high transient voltages as found in automotive, industrial, and telecommunication applications. The devices operate from 5.5 V to 72 V
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
Precision voltage reference fits in 2 x 2-mm package
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1/27/2006   Post a comment
Linear Technology Corp. claims to have developed the first precision series voltage reference that is available in a 3-lead, 2 x 2-mm DFN package.
AnalogicTech offers a USB battery charger IC with integrated charge reduction circuit
Articles  
1/27/2006   Post a comment
AnalogicTech has introduced a highly integrated battery charger IC designed to operate from USB port inputs. The AAT3688 features an innovative charge reduction loop that reduces charge time by automatically monitoring the USB port voltage and dynamically adjusting the current while the battery is charging.
Current-sink D/A converter measures 3 x 3-mm
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1/25/2006   Post a comment
Maxim Integrated Products Inc. says this 10-bit, dual, digital-to-analog (D/A) converter for fiber-optic applications can sink 3.6 milliamps of current per output.
12-bit A/D converters tout low power
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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
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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
Tiny analog switches target tight spaces
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1/19/2006   Post a comment
ON Semiconductor rolled out a trio of low resistance analog switches for portable and wireless audio applications that it says are the smallest and highest performing available.
Audio subsystem houses Class D speaker
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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
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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
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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.
Codec switches between Class AB and Class D
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1/16/2006   Post a comment
Wolfson Microelectronics plc today announced what it claims is the first Class AB-to-Class D switchable stereo codec for portable applications.
Take some time to read the "classics"
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1/16/2006   Post a comment
Reading some of the original seminal works of engineering and physics can give new insight and a new appreciation of what it is like to cut a path into unknown territory.
Digital technology transmits DC Power and Audio Signal over wire
Articles  
1/13/2006   Post a comment
A new digital technology from Flying Mole, introduced at CES, transmits both DC Power and Audio Signal using normal wires, without any sound dissipation, for over 300 feet.
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.
Decoder chip complies with latest optical disc formats
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1/12/2006   Post a comment
Broadcom Corp. claims this high definition (HD) audio/video decoder is the only fully compliant chip with the emerging Blu-ray and HD DVD optical disc formats.
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.
Micropower LDO IP blocks increase battery life
Articles  
1/11/2006   Post a comment
LTRIM Technologies introduces a family of low drop out (LDO) voltage regulator IP blocks with low quiescent current and fast response time to increase operating time for handhelds.
Class D amplifiers tout true fidelity
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1/10/2006   Post a comment
JAM Technologies, Inc. is setting its sights on digital TVs with its latest True Fidelity digital-input stereo amplifiers.
Single-chip broadcast decoder speeds transition to PCI Express
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1/10/2006   Post a comment
Designed for consumer electronics applications, the PCI Express 1.0-a-compliant and 1.1-ready audio/video (A/V) decoder from Conexant Systems captures and decodes analog and digital broadcasts.
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.
Class D amplifiers for automotive generate less heat
Articles  
1/9/2006   Post a comment
Texas Instruments Inc. (TI) developed its first digital amplifiers for the automotive market, which are based on its PurePath Class D amps for the home.
AUDIO: Digital amps claim advances
Articles  
1/9/2006   Post a comment
D2Audio Inc., here, has introduced a digital amplifier with closed-loop feedback technology that corrects, on-the-fly, the audio signal being amplified.
Low dropout regulator incorporates ramp control
Articles  
1/6/2006   Post a comment
Micrel Inc. launched a 2-amp low dropout regulator featuring built-in sequencing, tracking and ramp control for low voltage FPGAs, DSPs and ASICs.
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.
Digital pot interface controls volume and balance
Articles  
1/4/2006   Post a comment
Maxim Integrated Products Inc.'s dual, 32-tap, audio-taper digital potentiometers feature a debounced, push-button interface for volume and balance control.
Configurable power management IC maximizes battery life
Articles  
1/4/2006   Post a comment
The Summit Micro power management and control IC's configurability maximizes battery life, provides design flexibility and improves cycle time for consumer electronics.
Linear Technologies high power LED driver has a 3000:1 PWM dimming range
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1/4/2006   Post a comment
Linear Technology introduces the LTC3783, a current-mode multi-topology converter with constant-current PWM, dimming for driving high-power LED strings and clusters.
Linear Technologies high power LED driver has a 3000:1 PWM dimming range
Articles  
1/4/2006   Post a comment
Linear Technology introduces the LTC3783, a current-mode multi-topology converter with constant-current PWM, dimming for driving high-power LED strings and clusters.
Analog switch targets mobile applications
Articles  
1/3/2006   Post a comment
Texas Instruments Inc. claims low total harmonic distortion and very low crosstalk make this single-pole, double-throw analog switch suited for mobile applications.
Low-frequency, voltage-controlled oscillator has adjustable duty cycle
Articles  
1/2/2006   1 comment
Using a few op amps and diodes, engineers can implement a low-frequency VCO which is useful in many basic system designs.
Start 2006 with out-of-the-box thinking
Articles  
1/2/2006   Post a comment
Forget looking back or trying to predict the future; instead, resolve to be a creative engineer.




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