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2012-11-14 Using class D amplifiers in portable apps
Find out how to reduce EMI and maintain high efficiency with class D amplifiers in portable applications
2006-10-06 TI unveils 'highest-power' single-chip Class D amp stage
TI says its TAS5261 is the industry's highest power single-chip Class D amplifier stage, delivering more than 300W into a 4-ohm speaker (or 220W into 6 ohms, 125W into 8 ohms) for AV and DVD receivers and home theater systems
2008-02-27 TI debuts closed-loop, digital-input Class-D amp
TI claims the industry's first digital-input, 20W stereo Class-D speaker amplifier with closed loop feedback
2002-08-01 TI Class D amp eliminates output filter
The TPA2005D1 Class D amplifier from Texas Instruments Inc. eliminates the need for an output filter, making it 30 percent smaller than the company's previous products
2012-06-13 TDF8597, TDF8599A, TDF8599B class-D amps for automotive apps
Know the available application PCB and the I2C-bus control software.
2007-06-01 Sound advice on Class D audio amps designs
Audio designers need to pay attention to many details when they are building high-performance Class D audio amplifiers, including the choice of output transistor size, output stage protection, modulation technique and filter topology. EMI reduction and system cost must also be considered along with the desired sound quality
2006-07-06 Ref design optimizes six-channel, Class D audio amp
International Rectifier's IRAUDAMP3 Class D audio reference design is a six-channel, 120W half-bridge Class D audio power amplifier
2008-01-17 Perform thermal tests on Class D amps
There are two kinds of amplifiers used to generate the output power, class AB and class D amplifiers. The shift to class D was mainly the result of the introduction of flat-screen LCD and plasma TVs, in which space was limited and heat dissipation became an issue. Since the thermal test standards were developed when only class output power AB was used, we want to investigate if they are still appropriate for class D
2007-02-08 National intros new Boomer class D audio amp
National Semiconductor has introduced the first product in its new line of Boomer class D audio amplifiers with integrated converter technology that eliminates the need for an external boost converter
2005-12-13 Maxim Class D amp targets flat-panel display apps
Maxim introduced a high-power, highly efficient, Class D amplifier optimized for flat-panel display applications, including LCD and PDP televisions and home audio equipment
2007-06-11 LX1725 15W X 2 30W BTL class-D audio amplifier
Class-D audio amplifiers basically are pulse width modulation (PWM) amplifiers; these types of amplifier require low pass filtering of the output to demodulate the PWM carrier
2007-07-11 IR unrolls Class D audio amp reference design
International Rectifier has introduced the IRAUDAMP4 Class D audio power amp reference design.
2010-01-08 Integrated Class-D audio amps deliver 600W
Audio bandwidth over 73kHz achieves HD media playback in Blu-ray home theater systems and other apps.
2014-08-15 Inductor for TAS2552 boosted Class-D amp
TAS2552 boosted class-D amplifier has a DC/DC converter that requires a properly sized inductor for optimal performance. This application report explains how to choose an inductor for the TAS2552
1999-06-29 High-efficiency audio amplification using class-D audio power amplifiers
The paper deals with audio amplifiers based on a Class-D topology, its advantages with portable audio applications and the potential problems these amplifiers incur when designing without linear audio amplifiers in PDAs, multimedia notebooks, and other portable battery operated equipment
2006-08-03 Freescale Class D amp enables HiFi audio
Freescale has unveiled the new Symphony Class D amplifier the promises a high-fidelity system solution
2007-10-09 Flexible chipset targets 50-500W Class D audio amps
IR has unveiled a chipset that features the new IRS2092 integrated audio driver IC with protected PWM switching and IR's full complement of digital audio MOSFETs.
2013-11-04 Diodes intros compact 20W mono Class-D audio amp
PAM8320's low-impedance drive capability enables it to deliver 20W into a 4 bridge-tied-load speaker, aimed at small-enclosure speakers in wireless headphones, PCs and docking station products.
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
2007-09-17 Class-D op amp boasts high efficiency, small size
Texas Instruments Inc. has introduced a monolithic, filter-free, Class-D audio power amplifier with an integrated boost converter, which provides constant output power for portable applications
2009-02-02 Class-D audio amp handles up to 6.5Vdc
Apexone Microelectronic has launched the A7023 stereo digital volume-controlled Class-D audio amplifier IC that features of up to 6.5Vdc working voltage to meet the requirements of batteries or chargers
2010-02-05 Class-D audio amp equipped with DAC noise filter
From Texas Instruments Inc. comes a 3.2W, mono Class-D audio amp with an integrated DAC noise filter that reduces codec noise by as much as 82 percent, compared to devices without this feature.
2010-01-15 Class-D amps deliver cost-effective audio solution
Intersil's latest SoC Class-D digital audio amplifiers provide complete, cost-effective audio solution for flat panel TV systems, PC multimedia speakers and other high-volume consumer products
2005-11-25 Class-D amplifier targets FPDs
Maxim Integrated Products claims that its MAX9741 is the lowest cost filterless Class-D amplifier designed for flat-panel displays
2010-06-18 Class-D amp with boost converter extends battery life
TI's Class-D audio amplifier with boost converter packs battery monitoring AGC and SpeakerGuard technology to prevent early shutdown at low battery voltages
2010-06-10 Class-D amp tailored for DVD, Blu-ray players
STMicroelectronics is rolling out an analog-input 2 x 100W class-D power amplifier, extending its range of Class-D devices that deliver audiophile sound quality
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
2008-05-16 Class-D amp evaluation made easy through design kits
Microsemi's reference design kits will enable RF design engineers to immediately evaluate a highly efficient, high-power Class-D amplifier
2005-05-11 Class-D amp enhances flat screen TV sound quality
This Class-D amplifier for flat screen TVs from Royal Philips Electronics drives 20W of continuous output power per channel with no external heat sink
2008-07-09 Class-D amp does dynamic range compression
Texas Instruments has introduced a highly advanced, filter-free, stereo Class-D amplifier that provides a 1.7W per channel output drive capability across an 8 load and improves overall volume vs. traditional Class-D products
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