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2007-10-18 Design Class D audio amps into portable applications (Part 2
To maximize the benefits of using Class D amps, it is important to understand the fundamental difference in operation between Class D and Class AB amplifiers, since each amplifier technology requires different considerations when designing systems that incorporate audio
2007-09-05 Design Class D audio amps into portable applications (Part 1
To maximize the benefits of using Class D amps, it is important to understand the fundamental difference in operation between Class D and Class AB amplifiers, since each amplifier technology requires different considerations when designing systems that incorporate audio
2006-01-13 Design and analysis of a basic class D amplifier
Deceptively complex, Class D amplifiers have a whole series of practical problems that must be overcome to achieve an acceptable result.
2008-10-24 Class-D amp slashes up to 50% cost in car audio systems
Texas Instruments has extended its TAS54xx family of Class-D audio amplifiers with two new devices that offer greater integration and channel flexibility, saving OEMs up to 50 percent system cost when designing automotive head unit and external amplifier applications
2007-12-19 Class D audio subsystems render 3D stereo sound
Maxim Integrated Products has introduced the MAX9775/MAX9776 highly efficient Class D audio subsystems that provide 3D stereo enhancement
2009-05-04 Class D audio amp delivers low quiescent, standby current
AnalogicTech has launched the AAT5101, its first Class D audio amplifier that delivers power savings by combining low voltage operation with low quiescent current and standby current for portable electronic systems.
2008-04-16 Class D amps liven up audio in flat-panels
The latest developments in audio power amplifier echnology are increasing the sound quality in flat-panel displays to match the superb image quality.
2010-09-22 Car audio amplifiers support start/stop function
STMicroelectronics releases first in new line of amplifiers compatible with start/stop engine management systems
2005-09-14 Audio subsystem simplifies designs
National Semiconductor introduced the Boomer audio subsystem to simplify the development of full-bandwidth stereo and 3D sound in mobile phones and other battery-powered devices
2006-01-11 Audio subsystem integrates smart phone, VoIP phone functions
The audio subsystem with a mono Class D speaker driver from National integrates all the analog and digital audio functions needed for smart phones and VoIP phones
2008-10-22 Audio power amp targets automotive warning systems
From National Semiconductor Corp. comes a power amplifier touted to be the first monolithic amplifier for automotive warning and alert tone amplification
2005-11-07 Audio power amp eradicates switching noise
TAEC announced the first Class-KB audio power amplifier, TB2905HQ
2009-02-19 Audio power amp comes with electric volume
New Japan Radio Co. Ltd has launched the NJU7086, high-power and low-voltage stereo audio power amplifier with electronic volume for portable applications.
2009-05-18 Audio IC suits portable multimedia apps
Atmel Corp. has released its AT73C240 Audio Companion IC for portable multimedia applications. Manufactured on Atmel's low-cost mainstream CMOS process, the AT73C240 integrates an audio quality 20bit Stereo DAC and an up to 1W audio power amplifier.
2008-02-04 Audio DAC extends mobile music playback time
ST's audio DAC features a new technology that reduces power consumption, thereby increasing battery life and playback time without compromising audio quality in mobile music applications
2006-01-25 Audio amps cut power consumption
National Semiconductor expanded its ceramic speaker driver family with two Boomer audio power amplifiers in tiny packages that are said to provide high capacitive loads for portable apps
2009-10-08 Audio amps are 20x more efficient than Class D
The AS1001 architecture uses patented techniques to minimize fixed and output-dependant variable power losses
2005-08-16 Audio amplifiers supply high power
The two new single-chip Boomer audio amplifiers from National Semiconductor Corp. deliver up to 1.8W of output power to mobile phones and portable devices regardless of the battery's voltage
2008-05-08 Audio amp integrates boost converter for portable apps
A monolithic, filter-free Class-D audio amplifier with an integrated boost converter for portable applications has been introduced by Texas Instruments
2005-02-11 Atmel audio chip includes DAC, power speaker
Atmel's AT73C213 audio companion chip for multimedia portable apps integrates an audio-quality 20bit stereo DAC and an audio power amplifier providing up to 1W.
2007-06-05 Amplifier gives mobile phones 3D audio effects
STMicroelectronics introduces a compact audio power amplifier chip for portable audio products which creates 3D audio effects in stereo speaker outputs to add impact and a surround-sound feel to MP3 and video files.
2005-04-04 Amplifier delivers 1.2W RMS power
ST's new audio amplifier is capable of delivering 1.2W of continuous RMS power into an 8? load at 5V, with a total harmonic distortion of 1 percent, measured at 1KHz.
2008-01-17 200V audio power amp tipped for high-end apps
National Semiconductor introduces a pair of 200V mono audio power amplifier input stages, which the company claims reduce design time and enable amplifier designs with a THD+N as low as 0.00035 percent.
2007-07-30 200V audio driver targets high-power transistors
The highly integrated LME49810 audio power amplifier driver from National Semiconductor is a 200V IC designed to drive discrete high-power transistors in systems delivering up to 3,000W.
2005-09-21 Zetex Acoustar technology used in Theta's digital audio amplifier
Zetex and Theta Digital announced that Zetex' Acoustar digital amplifier processing technology is being used to provide unprecedented sound fidelity in Theta's new digital audio amplifierthe Virtu PowerDAC
2014-04-22 Utilise audio amps for voltage splitting (Part 4
This instalment focuses on the reducing of noise from voltage splitters.
2014-04-16 Utilise audio amps for voltage splitting (Part 3
Here's a look at voltage splitters based on power audio amplifiers
2014-03-17 Utilise audio amps for voltage splitting (Part 2
In the second part of this series, we discuss some features of power audio amplifiers
2010-08-23 USB amplifier delivers loudspeaker audio fidelity
NXT has launched its audio amplifier module that transforms USB-powered audio power and quality to loudspeaker audio fidelity.
2004-12-08 TS4984 low voltage audio power stereo amplifier evaluation board user guide
This app note describes the DEMO TS4984Q evaluation board designed for the TS4984 low power audio stereo amplifier.
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