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What is a power amplifier?
Designated as the last amplifier in a transmission chain, a power amp typically requires the most attention to power efficiency.
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2003-10-03 AWT6111 CDMA/AMPS Power Amplifier
This application note gives a general description and discusses the application board, minimum bench requirements, turn on procedures, and layout considerations of the AWT6111 CDMA/AMPS Power Amplifier.
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.
2009-01-13 Audio chip packs DSP, class-D amplifier
STMicroelectronics NV has introduced a combined audio processing and amplifier chip with enhanced features to increase performance from compact home-audio equipment
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
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
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.
2005-05-26 AR Worldwide RF amplifier powers 100kHz to 250MHz apps
AR Worldwide has introduced its 1,000W model 1000A250 power amplifier designed for the 100kHz to 250MHz frequency range
2011-10-07 API specs enable power efficient 4G phones
OpenET Alliance has announced its envelope tracking interface to develop 4G handsets that require 30-50 percent less energy.
2007-06-27 Analog ICs aid low-power handset designs
A cluster of new, analog-centric, components from National Semiconductor can help handheld designers implement the low-power tactics essential to longer operating times
2005-05-11 Anadigics supplies power amplifiers to South Korea's handset maker
Anadigics Inc. has received production orders from Samsung Electronics Co. Ltd for the AWT6166 GSM/GPRS power amplifier (PA).
2005-07-13 Anadigics supplies 3G power amplifiers to UTStarcom
Anadigics Inc. is shipping production volumes of GSM/GPRS and W-CDMA power amplifiers (PAs) to UTStarcom Inc. for UTStarcom Inc.'s GW200 handset
2011-06-15 Anadigics power amp runs on Samsung's Droid Charge phone
Anadigics announced that it will ship production volumes of AWC6323 dual-band power amplifiers to Samsung Droid Charge smartphones
2004-09-15 Anadigics PA module offers low-power quiescent current mode
Anadigics announced that it is shipping production volumes of a new indium gallium phosphide heterojunction bipolar transistor power amplifier for 450MHz CDMA apps.
2003-12-02 Anadigics PA has integrated power control
Anadigics Inc. has released a 7-by-7mm GSM quad band power amplifier with integrated power control.
2002-08-09 ANADIGICS launches smaller CDMA power amps
ANADIGICS Inc. has launched CDMA power amplifier modules that occupy a footprint of 4-by-4mm - smaller than the 6-by-6mm footprint of conventional power amplifiers.
2003-04-04 Anadigics buys RF Solutions' WLAN power-amp line
Anadigics has purchased the WLAN power amplifier product line from RF Solutions Inc. for $2.8 million up front, with a contingency clause for 3 million common Anadigics shares, based upon 12-month performance.
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.
2008-09-19 Airwire antenna extends power transmission range
Wireless applications in the 2.4GHz band from remote controls to Zigbee industrial controllers to Wi-Fi nodes usually have to use a more powerful amplifier to expand their range
2005-01-24 Agilent to acquire power amplifier maker in South Korea
Agilent Technologies Inc. and South Korea-based Wavics have entered into an agreement under which Agilent will acquire Wavics, a designer and manufacturer of power amplifier modules for the worldwide mobile handset market.
2002-12-06 A wideband linear power amplifier (1.6-28 MHz) for 300W PEP with 2 MOS transistors BLF177
This application note gives a description of a wideband push-pull amplifier for the frequency range 1.6MHz to 28MHz
2008-03-03 A simple method to reduce DC power consumption in CDMA RF power amplifiers through the LMV225 and an efficient switcher
This article presents a simple power tracking technique for efficiency enhancement in CDMA RF power amplifiers
2000-06-12 A Linear, High Efficiency, HBT, CDMA Power Amplifier
This technical note examines the RF2108, an HBT CDMA cellular dual-mode power amplifier that is designed to simplify cellular phone design and improve operation.
2001-04-20 A high-efficiency 400W 13.56MHz RF power amplifier
This application note details the design, development, assembly and performance of a high-efficiency 400W/13.56MHz RF power amplifier operated from a 100Vdc supply and with an efficiency of 75 percent.
2000-06-14 A Dynamic Current Control Scheme for RF Power Amplifiers
This technical note demonstrates a dynamic current control scheme to automatically adjust bias current on a need basis to meet the linearity requirements of RF power amplifiers
2001-04-03 A broadband 100W push-pull amplifier for band IV & V TV transmitters based on the BLV861
This application note describes a broadband high power amplifier design with a single BLV861 transistor intended for applications in TV transmitter output stages.
2001-04-20 A 50MHz, 250W amplifier using push-pull ARF448A/B
This application note describes a simple and inexpensive power amplifier based on Advanced Power Technology's series of RF power MOSFETs.
2000-06-14 A 3V HBT Power Amplifier for CDMA/AMPS Handsets
This technical note examines RF Micro Devices' RF2152 HBT power amplifier, which offers handset designers the opportunity to optimize an amplifier for IS95 CDMA and dual CDMA/AMPS applications.
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