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2009-07-31 Class-D amps transform cars into concert halls
Extremely high dynamic audio range lets the class-D amplifier family improve in-car entertainment
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
2010-03-30 Class G headphone amp extends listening time
STMicroelectronics is rolling out a stereo headphone amplifier IC that achieves high efficiency enabling listeners to enjoy high-quality sound for longer between battery charges
2008-04-16 Class G amps key in driving ceramic speakers
Today's portable devices drive a need for smaller, thinner and more power-efficient electronic components. Cellphone form factors have become thin that the traditional dynamic speaker has become the limiting factor in how thin manufacturers can make their handsets. Ceramic or piezoelectric speakers are quickly becoming a viable alternative to dynamic speakers
2009-09-11 Class D amp saves board space, cost
STMicroelectronics' 50W+50W stereo Class D amplifier IC delivers audiophile sound quality
2006-07-14 Anadigics PAs deliver performance, reliability to ZTE handset
Anadigics announced that it is supplying indium gallium phosphide heterojunction bipolar transistor power amplifiers to ZTE's F866 W-CDMA handset
2004-07-20 AKM modulator generates 110dB SNR
Asahi Kasei Microsystems released a Class-D two channel modulator that can generate 110dB signal-to-noise ratio.
2005-09-12 Why Class D amplifiers may test well but often sound terrible
Class D amplifiers are fundamentally different from analog amplifiers, not only in their circuitry, but more importantly in the way they operate
2008-03-31 Toshiba adds VHF-to-UHF dual-mode LNA
TAEC has rolled out a VHF-to-UHF dual-mode RF amplifier IC for use with portable systems with a built-in TV tuner
2006-01-09 TI's Class D amps generate less heat
Texas Instruments announced its first digital amplifiers designed to meet the high reliability and unique requirements of the automotive market.
2004-01-09 TI PWM device capable of 48-bit processing
Texas Instruments has introduced a digital audio PWM processor with an integrated 48-bit digital audio processor
2004-12-27 TI op amp provides high dynamic range
Texas Instruments unveiled a dual, high-output current, high-gain bandwidth operational amplifier from its Burr-Brown product line
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
2004-04-22 TI DAC with -100dB total harmonic distortion
Texas Instruments has introduced a four-channel, 24-bit audio DAC from its Burr-Brown Pro Audio product line which features 118dB dynamic range
2009-09-04 The real story about closed-, open-loop Class D amps
This article reviews the traditional method of measuring PSRR and explains why it's ineffective in measuring the effects of power supply ripple in BTL Class D amplifiers
2003-11-04 STMicro driver IC cuts cellphone component count
STMicroelectronics has introduced a headset and speaker driver IC for mobile phones that includes an audio amplifier and digital volume control
2010-08-25 Stereo headphone amps adjust supply rails
The 30mW headphone amplifiers continuously adjust the supply rails in response to the input signal and minimize power consumption compared to traditional Class AB amplifiers
2006-09-07 Stereo codecs extend battery life in portable devices
TI said its new audio codecs extends battery life by lowering power consumption in portable devices like digital still cameras and portable media players
2007-11-20 Stereo codec touts TSC, mic, headphone amp
A low-power audio codec with a built-in microphone amplifier, touch-screen controller (TSC) and stereo headphone amplifier has been introduced by AKM Semiconductor Inc.
2009-06-25 Stereo codec packs Class D speaker driver
Wolfson Microelectronics has releases the second device in its stereo chip line is being promoted as the industry's lowest power codec
2005-12-08 Speaker amp with 90dB PSRR
Maxim Integrated Products unveiled a Class AB 2.2W speaker amplifier with integrated analog volume control, a beep input and 90dB power-supply rejection ratio
2007-09-07 SD video filters require 3.3V single supply
Maxim Integrated Products has introduced a family of standard-definition video filters for STBs and portable consumer applications that operate from a single 3.3V supply.
2003-10-16 RF "sleep modes" can improve battery life in cellphones
It is through techniques collectively known as "power management" that we have attained such talk and standby times in today's products
2004-07-23 RadioScape DAB module offers raft of innovative features
RadioScape announced a family of DAB modules with a raft of new and innovative features that further differentiate DAB from traditional analog radios.
2007-06-04 Quad op amp delivers low offset
iC-Haus GmbH delivers its new unity gain stable quad op amp that features an offset of less than 1?V at 3.5MHz.
2009-07-30 Processor packs GPS for in-car navigation systems
STMicroelectronics NV has developed an application processor with an embedded GPS for next generation in-car and portable navigation systems.
2004-05-27 Philips develops reference design for Class-D amps
Philips introduced a semiconductor reference design for what it claims as the industry's first high power, fully digital Class-D amplifier solution
2007-07-05 Op amp features 10MHz unity gain bandwidth
austriamicrosystems has introduced its AS1710 op amp that operates from a single 2.7-5.5V supply and can swing to within 100mV from the rails while sinking or sourcing 50mA of output current.
2006-08-17 National unveils 'smallest' Boomer Class AB amps
National Semiconductor has introduced two Boomer Class AB amplifiers in a 0.4mm-pitch package, said to be the world's smallest micro SMD package.
2004-03-12 National Semi amps offer "easy on the ears" transitions
National Semiconductor has added three stereo audio amplifiers in its Overture line of products for home stereo systems
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