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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
2013-03-07 Researchers unveil small-area, low-power instrumentation amp
Toyohashi Tech researchers found a way to develop smaller IAs that are geared for high-spatial-resolution biomedical and environment monitoring systems.
2010-11-03 Renesas spins off mobile semicon biz
Renesas Electronics' is creating a separate subsidiary for its mobile semiconductor products to help protect its power amplifier business.
2009-03-10 Reducing AC coupling capacitance in high frequency signal transmission
AC coupling is common in amplifier circuits for practical and historical reasons. The practical reason is to remove DC power on a transmission line and into a load. The historical reason is to conform to the default standards of tradition.
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.
2006-08-02 Precision op amps target instrumentation, DAQ apps
A pair of in-amps from Analog Device provide signal conditioning and amplification over large input voltage ranges, with well-defined DC accuracy and gain settings.
2007-09-21 Precision op amps feature low noise
National Semiconductor has introduced two precision op amps that offers what the company claims the industry's lowest input voltage noise and highest accuracy for products operating at low frequencies and low supply voltage.
2013-12-06 Power tip: Implications of envelope tracking
Envelope tracking calls for a high-bandwidth power supply with the ability to source and sink current, which complicates the design.
2014-06-10 Power converter for negative output voltage apps
Find out how to produce negative output voltages from positive input voltages using Maxim Integrated Products' MAX17501 and MAX17502 synchronous step-down converters.
2008-05-05 Power amps tout high linearity, low power
Avago Technologies has introduced 1W and 2W families of high-performance power amplifiers designed for next-generation cellular and WiMAX infrastructure applications.
2007-06-15 Power amps step up linearity for WiMAX, Wi-Fi terminals
Sirenza Microdevices released two additions to its product line for Mobile WiMAX (802.16 e) and Wi-Fi (802.11 b/g/n) applications.
2009-06-11 Power amps simplify 3G handset design
Anadigics Inc. has launched of a new family of W-CDMA/HSPA power amplifiers (PAs) that incorporate daisy-chainable RF power couplers enabling simplified design of 3G handsets, data cards, modems and other types of UMTS subscriber devices.
2007-11-20 Power amps reduce cost of Wi-Fi implementations
SiGe Semiconductor has released two power amplifiers that are designed to provide manufacturers with the lowest cost route to developing Wi-Fi systems.
2008-03-27 Power amps fit next-gen cellular, WiMAX apps
Avago Technologies has introduced two new power amplifier product families designed for next-generation cellular and WiMAX applications.
2007-02-16 Power amp optimizes battery life of 3G handsets
TriQuint's quad-band GSM/EDGE-Polar power amplifier module provides a high level of battery life for 3G wireless handsets, PDAs and laptop data cards.
2006-11-29 Power amp loads 20mW for weak signal amplification
New Japan Radio has announced the NJM2278, a 20mW power amplifier designed for use in the transmitters of specific extremely low-power radio equipment using weak signals in the 300/400MHz bandwidth.
2005-12-27 Post amps deliver higher gain, higher sensitivity
Micrel's new post amplifiers feature 3.3V power supply, higher gain and higher sensitivity for either signal or loss of signal indicators.
2002-09-09 Philips reaffirms relationship with Ericsson Mobile Platforms
Royal Philips Electronics and Ericsson Mobile Platforms have signed an agreement which reinforces their partnership to develop 2.5G and 3G handset technologies utilizing Philips' semiconductor capabilities.
2011-10-05 Performing wideband digital pre-distortion
Learn about a broadband modeling approach that quickly characterizes broadband RF power amplifiers.
2008-03-11 PAs suit base stations across all standards
RFMD has launched InGaP power amplifiers that address base station applications across all cellular standards and frequencies.
2013-04-18 Organic transistors provide clearer mind map
A group of French scientists have developed microscopic, organic transistors that can amplify and record signals from within the brain.
2007-05-04 Op amps suit automotive, industrial applications
STMicroelectronics' TS507 high-precision op amp features an ultralow input offset voltage guaranteed over a wide common-mode voltage range, making it suitable for automotive and industrial applications.
2008-04-28 Op amps promise ultralow noise
ADI has introduced the latest addition to its portfolio of low-noise operational amplifiers.
2007-07-10 Op amps enable power savings, extended operation
Intersil has launched a new family of power-efficient, rail-to-rail I/O operational amplifiers and comparators designed to deliver battery savings and extended operation.
2009-06-09 Op amps combine high precision, low noise
Maxim Integrated Products has released the MAX9943/MAX9944/MAX9945 family of high-voltage, low-power operational amplifiers.
2007-01-26 Op amps claim near-zero drift and input noise
Noise level of ADI's AD8231 op amps is 32nV/rt-Hz, which the company documents as being just 1/5 the value of competing "zero-drift" instrumentation amplifiers.
2007-04-20 Op amp/comparators feature low power draw
Rohm's new CMOS op-amp/comparators allow operation from 1.8V, ensuring compatibility with the latest low-voltage CPU and DSP power supplies.
2011-02-03 Op amp family improves sensor measurement
TI's OPAx320 family supports high-impedance sensor signal conditioning with 0.9pA input bias current, zero crossover distortion, 150?V offset voltage, and common mode rejection rate of 114dB.
2009-02-02 Now sampling: base station amps with >40% efficiency
NXP Semiconductors has started sampling integrated Doherty amplifiers for cellular base stations based on its RF transistor technology. The initial BLD6G21-50 and BLD6G22-50 amplifiers are designed to deliver efficiency of greater than 40 percent at an average power of 10W.
2002-10-09 Nortel Networks sells optical components assets to Bookham
Nortel Networks Corp. has agreed to sell certain assets relating to its optical components business, to Bookham Technology.
2003-08-18 NBB and NDA Series Reliability
This application note provides additional information on component reliability with varying device junction temperature, and the effect of the package used on junction temperature.
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