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What is an amplifier?
A device that uses a small amount of energy to control a larger amount. The relationship of the input to the output, expressed as a function of the input frequency, is called the transfer function of the amplifier, and the magnitude of the transfer function is called the gain.
total search2072 articles
2009-01-27 ZTE picks Apexone's amplifiers for advanced handsets
ZTE Corp., one of China's top handsets OEMs/ODMs providing mobile solutions to customers around the world, has selected Apexone Microelectronics' A7013 Class D audio amplifier.
2008-02-13 Xilinx, Freescale offer DPD design for power amplifiers
Xilinx is presenting a DPD reference design based on its Virtex range of FPGAs and XtremeDSPs that is optimized for Freescale Semiconductor's LDMOS power amplifiers.
2002-04-08 Wireless-trench technology for silicon GSM power amplifiers
This article describes the results obtained for power amplifiers designed with the new wireless trench technology.
2007-12-06 Wideband amplifiers tout fast slew rate
Texas Instruments Inc. has introduced a family of integrated wideband variable gain amplifiers said to deliver a flexible combination of bandwidth, gain and analog input voltage.
2008-10-03 Wide input range earmarks current-sense amplifiers
Maxim Integrated Products introduces the MAX9928/MAX9929 low-cost, current-sense amplifiers for monitoring charge and discharge currents.
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
2008-10-01 Video drivers tout single supply operation of amplifiers
Intersil introduces 200MHz single supply video drivers, the ISL59833 and ISL59837, each equipped with charge pumps that create negative voltage and remove the need for external negative rails.
2008-06-30 Video amplifiers promise cleaner signal, low-power use
Cadeka Microcircuits has introduced the CLC3800 and CLC3801 low power, triple video amplifiers that are designed to meet the requirements of today's cost-sensitive, standard definition consumer and industrial video applications.
2007-08-01 Video amplifiers operate at 1.8V single supply
The MAX9509/MAX9510 from Maxim push the power consumption limit to a new low by operating the video amps at only 1.8V.
2009-07-22 Video amplifiers are energy-efficient
From Texas Instruments Inc. come two video amplifiers that help manufacturers meet the demand for more energy-efficient home and portable entertainment systems.
2000-09-27 Utilizing class-D audio power amplifiers for high efficiency
New filterless modulation techniques eliminate the biggest limitation of using class-D amplifiers in portable equipment. Notebook computers, PDAs, mobile phones and battery-powered speakers are applications that could greatly benefit from the use of class-D amplifiers.
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.
2005-04-04 Universal Amplifiers
Linear Technology has introduced a new class of amplifier family that provides various functions without using any external components
2005-01-11 Tripath audio amplifiers power Panasonic CQ-C901UL
Tripath Technology Inc. announced that its Class-T digital audio amplifiers, TCD6001 and TPS4100, will power Panasonic's latest automotive in-dash head-unit, the CQ-C901UL.
2002-11-25 Tripath amplifiers power Sanyo's latest plasma TVs
Sanyo has selected Tripath Technology Inc.'s Class-T 1-bit digital audio amplifiers for its latest plasma display TV receiver series - Vizon.
2000-06-14 Transmit and Receive AGC Amplifiers for CDMA Cellular/PCS Phones
This technical note examines RF Micro Devices' RF2607 CDMA/FM receive AGC amplifier and the RF2609 CDMA/FM transmit AGC amplifier, which both provide linear amplification and attenuation to the RF section of a CDMA phone.
2010-09-07 Transimpedance amplifiers boast improved sensitivity, dynamic range
Tiny signals no match for Mindspeed's new 1.25BG/s, 2.5GB/s TIAs
2001-06-19 Transimpedance amplifiers
This application note presents a preliminary for ANADIGICS' ATA series of transimpedance amplifiers, which are suitable as preamplifiers in fiber-optic receivers.
2005-08-09 Tiniest' 1.2W Class-D audio amplifiers
Power Analog Microelectronics, a developer of Class-D digital audio amplifiers and innovative power management semiconductors, introduced what it touts as the world's smallest 1.2W Class-D audio amplifiers
2005-08-03 Tiniest' 1.2W Class-D audio amplifiers
Power Analog Microelectronics (PAM), a developer of Class-D digital audio amplifiers and innovative power management semiconductors, introduced what it touts as the world's smallest 1.2W Class-D audio amplifiers
2008-07-04 TI says amplifiers slash audio expense for HDTVs
Texas Instruments Inc. introduces its second-generation, 15W stereo analog-input Class-D amplifiers with single-ended outputs.
2004-11-01 TI amplifiers mix high-gain adjust range, low noise
Texas Instruments introduced a wideband, voltage-controlled amplifier from its Burr-Brown product line.
2007-07-17 Three is a crowd for instrumentation amplifiers
This article explains the limitations of the conventional three-op-amp architecture for instrumentation amplifiers, and introduces Maxim's patented indirect current-feedback architecture.
1999-06-01 The practical side of switching audio power amplifiers
This paper will review existing amplifier technologies, explain basic theory behind switching amplifiers, discuss some switching amplifier design points and compare the efficiencies of three amplifier types.
2006-10-16 Techniques in designing high-performance amplifiers
Learn the factors that make amps oscillate and the general guidelines in designing high-speed amps.
2004-11-25 TDA856x and TDA8571J power amplifiers
This app note contains application information for the power amplifier TDA856x series and the TDA8571J
2002-10-28 Swept adjacent channel power analysis on digital TV amplifiers
The application software described here provides swept Adjacent Channel Power analysis, using AMIQ and SMIQ for signal generation and FSP, FSU or FSE for signal analysis, on power amplifiers used in digital TV systems.
2002-06-20 Stability and biasing for PWM amplifiers
This application note describes the stability and biasing of PWM amplifiers.
2002-03-25 Some tips on stabilizing operational amplifiers
This application note discusses the stable operation and maintenance of a feedback amplifier wherein it exhibits a condition with no oscillations, no overshoot and no peak in the closed loop response.
2009-06-18 Slew rate verification for wideband amplifiers
Slew rate defines an amplifier's maximum rate of output excursion. This specification sets limits on undistorted bandwidth, an important capability in A/D driver applications. Slew rate also influences achievable performance in D/A output stages, filters, video amplification and data acquisition.
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