Analog Devices

Analog Devices, Inc., also known as ADI or Analog, is an American multinational semiconductor company specializing in data conversion and signal processing technology, headquartered in Norwood, Massachusetts.[2][3] In 2012, Analog Devices led the worldwide data converter market with a 48.5% share, according to analyst firm Databeans.[4]

The company manufactures analog, mixed-signal and digital signal processing (DSP) integrated circuits (ICs) used in electronic equipment.[5][6] These technologies are used to convert, condition and process real-world phenomena, such as light, sound, temperature, motion, and pressure into electrical signals.[7]

Analog Devices has approximately 100,000 customers[8] in the following industries: communications, computer, industrial, instrumentation, military/aerospace, automotive, and consumer electronics applications.[3]

Analog Devices, Inc.
Traded as
FoundedCambridge, Massachusetts, United States (1965)
FoundersRay Stata
Matthew Lorber
HeadquartersNorwood, Massachusetts,
Key people
Vincent Roche,
CEO & President,
Raymond Stata,
Chairman of the Board
RevenueIncrease US$ 5.108 billion (2017)[1]
Increase US$ 1.055 billion (2017)[1]
Decrease US$ 727 million (2017)[1]
Total assetsIncrease US$ 21.141 billion (2017)[1]
Total equityIncrease US$ 10.162 billion (2017)[1]
Number of employees
15,300[1] (2017)


The company was founded by two MIT graduates, Ray Stata and Matthew Lorber in 1965.[9] The same year, the company released its first product, the model 101 op amp,[10] which was a hockey-puck sized module used in test and measurement equipment.[11] In 1967, the company published the first issue of its technical magazine, Analog Dialogue.[12]

In 1969, Analog Devices filed an initial public offering[13] and became a publicly traded company. Ten years later, the company was listed on the New York Stock Exchange.[14]

In 1973, the company was the first to launch laser trim wafers and the first CMOS digital-to-analog converter.[10] By 1996, the company reported over $1 billion in company revenue.[15] That same year, Jerald Fishman was named President and CEO, a position he held until his death in 2013 (see below).[16][17]

In 2000, ADI's sales grew by over 75% to $2.578 Billion and the company acquired five companies including BCO Technologies PLC, a manufacturer of thick film semiconductors, for $150 million.[15][18]

In January 2008, ON Semiconductor completed the acquisition of the CPU Voltage and PC Thermal Monitoring Business from ADI., for $184 million.

By 2004, ADI had a customer base of 60,000 and its portfolio included over 10,000 products.[15]

In July 2016, Analog and Linear Technology agreed that Analog would acquire Linear in an approximately $14.8 billion cash and stock deal.[19][20]


Analog Devices is headquartered in Norwood, Massachusetts, with regional headquarters located in Shanghai, China; Munich, Germany; Limerick, Ireland; and Tokyo, Japan. [21]

Analog Devices has fabrication plants located in the United States and in Ireland. The company's testing facility is located in the Philippines. Design centers are located in Australia, Canada, China, Egypt, England, Germany, India, Israel, Japan, Scotland, Spain, Taiwan and Turkey.[21]


ADI notable employees
Ray Stata and Jerry Fishman

Raymond Stata is a founder of Analog Devices and was responsible for the business strategy and product roadmap.[6][22] After founding the company in 1965, Stata served as the company's chairman of the board of directors since 1973, executive officer since 1996, CEO from 1973 to 1996 and president from 1971 to 1991.[23] In addition, Stata is also a trustee of the Massachusetts Institute of Technology,[23] his alma mater[22] and was awarded the IEEE Founders medal in 2003.[6] Stata received the EE Times "Lifetime Achievement" award in 2008.[24] Stata served as the chairman of the Semiconductor Industry Association for the year 2011.[25]

Vincent Roche became President and CEO of Analog Devices in May 2013. He first joined the company in 1988 as a marketing director in Limerick, Ireland.[26][27]

Barrie Gilbert was named the first Technology Fellow of Analog Devices in 1979.[28][29] In addition, Gilbert is an IEEE Life Fellow[30] and holds over 65 patents.[28] Gilbert is best known for the "Gilbert cell" – an electronic multiplying mixer.[30] At Analog Devices, Gilbert started the company's Northwest Labs design center in Oregon and continued to work on RF products crafted with high-speed nonlinear circuit techniques.[31]

Paul Brokaw is an expert on integrated circuit design who has spent most of his career at Analog Devices, where he holds the position of Analog Fellow.[32] Brokaw is the inventor of many analog IC circuits, including the Brokaw bandgap reference and holds over 100 patents.[33] He is also an IEEE Life Fellow.[34]

Robert Adams is Technical Fellow[35] and manager of audio development at Analog Devices Inc.[35][36] Adams holds many patents related to the audio and electronic field.[37] He is a member of the IEEE and a Fellow in the Audio Engineering Society.[38] Adams received a finalist ranking for the EDN Innovation and Innovator of the Year award in 1995.[37]


Jerald G. Fishman was the CEO and president of Analog Devices from 1996 until his death in March 2013.[39] In 2004, Fishman was named CEO of the Year by Electronic Business. He was a 35-year veteran of Analog Devices and also served on the board of directors of Analog Devices, Cognex Corporation and Xilinx.

Products and technologies

Analog Devices products include analog signal processing and digital signal processing technologies.[40] These technologies include data converters, amplifiers, radio frequency (RF) technologies, embedded processors or digital signal processing (DSP) ICs, power management, and interface products.[40]

Data converters include analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)[40] that convert electrical signal representations of real-world analog phenomena, such as light, sound, waveforms, temperature, motion, and pressure into digital signals or data, and back again.[41] Analog Devices ADC and DAC ICs are used in medical systems, scientific instrumentation, wireless and wired communications, radar, industrial process control, audio and video equipment, and other digital-processing-based systems, where an accurate signal conversion is critical. Data converters account for more than 50% of ADI's revenue.[42] ADI's companion amplifier ICs provide accurate, high-speed and precise signals for driving data converters and are key for applications such as digital audio, current sensing, and precision instrumentation.[43]

The company's data converter chips are used by National Instruments in high-precision measurement instrumentation systems.[44] Its data converters and amplifiers are also used by scientists and researchers in project "IceCube" – an underground telescope that uses digital optical modules (DOMS) to detect subatomic particles in the South Pole.[45][46]

Power management products for customers in the industrial, wireless infrastructure and digital camera markets support signal chain design requirements, such as dynamic range, transient performance, and reliability.[47]

Interface products include a broad range of interface IC products offered by the company in product categories such as CAN (controller area network),[48] digital isolators,[49] level translators, LVDS, mobile I/O expander and keyboard Controller, USB, and RS-232.[50]

Amplifiers includes precision and operational amplifiers,[51] instrumentation,[52][53] current sense, differential amplifiers,[54][55] audio amplifiers, video amplifiers/buffers/filters, variable gain amplifiers, comparators, voltage, other specialty amplifiers and products for special linear functions.

Radio frequency integrated circuits (RFICs)[56][57] address the RF signal chain and simplify RF system development.[58] The company's RF portfolio includes TruPwr[59] RMS power detectors and logarithmic amplifiers; PLL and DDS synthesizers; RF prescalers; variable gain amplifiers;[60][61][62] ADC drivers, gain blocks, LNAs and other RF amplifiers.[63]

Processors and DSP are programmable signal processing integrated circuits that execute specialized software programs, or algorithms, associated with processing digitized real-time data. Analog Devices Processors and DSPs are the Blackfin,[64] SHARC,[65] SigmaDSP,[66] TigerSHARC, ADSP-21xx and Precision Analog Microcontrollers. These make up the company's embedded processing and DSP portfolio, that are multi-DSP signal processing,[67]


Analog Devices had a line of micro-electromechanical systems (MEMS) microphones until it sold that business to InvenSense in 2013.[68] Analog Devices MEMS microphones were found in smart phones, tablet PCs, security systems, and medical applications.[69][70] ADI's MEMS accelerometers were designed into game pad controllers by Microsoft, Logitech and Pellican.[71]



Analog Devices sells linear, mixed-signal, MEMS and digital signal processing technologies for medical imaging, patient monitoring, medical instrumentation and home healthcare.[72] The company's precision signal-processing components and Blackfin digital signal processors are included in Karmelsonix's Wholter, an overnight pulmonary monitor, and the Wheezometer, a personal asthmatic assessment device.[73] Accelerometers produced by Analog Devices are included in ZOLL Medical's PocketCPR, which measures the depth of chest compressions and provides audible and visual feedback to a rescuer to allow adjustment to proper depth and to the correct rate of compression.[73]


Analog Devices develops components for safety systems, such as stability control systems and driver assistance systems, infotainment and interior applications.[74] Powertrain systems in hybrid and electric vehicles use high-precision data conversion products in battery monitoring and control systems.


Analog Devices industrial market[75] includes process control systems that help drive productivity, energy efficiency and reliability.[76][77]


Analog Devices has technology for consumer electronics, which includes signal processing circuits for image processing, auto focus, and image stabilization for digital still cameras and camcorders, audio and video processors for home theater systems,[78] DVD recorders, and high-definition televisions and advanced touch screen controllers for portable media devices.[77]


In 2009, Databeans published its report on the top semiconductor analog suppliers. Analog Devices was named number two with other suppliers including: Texas Instruments, National Semiconductor (acquired by Texas Instruments in 2011),[79] Maxim Integrated Products, and Linear Technology (collaborating with Analog Devices since March 2017).[80] Other competitors include: Infineon Technologies, STMicroelectronics and Intersil Corporation.[80] In 2011, Analog Devices was the third ranked analog semiconductor supplier.[81]

Analog Dialogue

In 1967, Analog Devices first published Analog Dialogue.[82] Dan Sheingold took the position of editor two years later, which he held for over four decades.[83][84] The current editor is Scott Wayne.[84] It is currently the longest-running in-house publication in the electronics industry.[85]

Analog Dialogue is a forum for the exchange of circuits, systems, and software for real-world signal processing and is the technical magazine published by Analog Devices.[85] It discusses products, applications, technology, and techniques for analog, digital, and mixed-signal processing. Analog Dialogue is published monthly on the Web. The featured technical articles are also compiled in quarterly print editions.



In 2009, Analog Devices announced EngineerZone, an online technical support community.[86] EngineerZone was launched so the design engineering community (customers, prospects, partners, employees and students) can ask questions, share knowledge and search for answers to their questions in an open forum.[86]


Analog Devices circuits from the lab reference circuits are engineered and tested for quick system integration to help solve design challenges ranging from common to complex. Reference circuits are smaller, modular designs that are more broadly applicable than application-specific reference designs.

Each reference circuit is documented with test data, theory of operation, and component selection decision criteria. In addition, reference circuits are tailored to meet real-world system integration needs and may also include board layout schematics, CAD tools models, device drivers, and evaluation hardware.[87]


  • 1969: Pastoriza Electronics[88]
  • 1971: Nova Devices[88]
  • 1978: Computer Labs[88]
  • 1984: International Imaging Systems[89]
  • 1990: Precision Monolithics, Inc.[88]
  • 1991: Edsun Laboratories-Tech Assets[89]
  • 1996: Mosaic Microsystems Ltd.[89]
  • 1997: Medialight Inc.[89]
  • 1999: Edinburgh Portable Compilers[89]
  • 2000: BCO Technologies PLC,[89] Signal Processing Associates,[89] Integrated Micro Instruments Inc.,[89] Chiplogic Inc. and Staccato Systems Inc.[89]
  • 2006: AudioAsics A/S,[88] Integrant Technologies and[88] TTPCom Ltd.-Certain Property[89]
  • 2011: Lyric Semiconductor, Inc.[90]
  • 2014: Hittite Microwave Corporation[91]
  • 2016: Linear Technology[92], Sypris Electronics and Cyber Security Solutions Business[93]


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External links

Analog Dialogue

Analog Dialogue is a technical magazine published by Analog Devices (ADI). It is a forum for the exchange of information related to circuits, systems, and software for real-world signal processing. It discusses products, applications, technology, and techniques for analog, digital, and mixed-signal processing, serving as a gateway to ADI’s technology. Analog Dialogue is published monthly on the Web, and featured technical articles are compiled in quarterly print editions. The headquarters of the magazine is in Norwood, Massachusetts.The current editor-in-chief is Bernhard Siegel.

Barrie Gilbert

Barrie Gilbert (born 1937 in Bournemouth, England) is an English-American inventor. He is well known for his invention of numerous analog circuit concepts, holding over 100 patents worldwide, and for the discovery of the Translinear Principle. His name is attributed to a class of related topologies loosely referred to as the Gilbert cell, one of which is a mixer - a key frequency translation device - used in every modern wireless communication device. A similar topology, for use as a synchronous demodulator, was invented by Howard Jones in 1963. During the 1950s he pursued an interest in solid-state devices while at Mullard, working on the development of early transistors, and later, the first-generation planar ICs. After some pioneering development of sampling oscillography he emigrated to the United States in 1964 to pursue this interest at Tektronix, Beaverton, Oregon, where he developed the first electronic knob-readout system and other advances in instrumentation. He returned to England in 1970, where he was Group Leader at Plessey Research Laboratories, managing a team developing OCR systems and integrated circuits (ICs) for communications applications. From 1972-1977 he consulted for Analog Devices Inc., Beaverton, OR, designing several ICs embodying novel nonlinear concepts. He returned to the USA and Tektronix in 1977 to pursue HF ICs and process development.

In 1979, Analog Devices allowed Gilbert to create the first remote design center for the Company, in Oregon, to persuade him to rejoin the company as their first Fellow. This center developed into the Northwest Labs.


The Blackfin is a family of 16- or 32-bit microprocessors developed, manufactured and marketed by Analog Devices. The processors have built-in, fixed-point digital signal processor (DSP) functionality supplied by 16-bit multiply–accumulates (MACs), accompanied on-chip by a small microcontroller. It was designed for a unified low-power processor architecture that can run operating systems while simultaneously handling complex numeric tasks such as real-time H.264 video encoding.

DSL filter

A DSL filter (also DSL splitter or microfilter) is an analog low-pass filter installed between analog devices (such as telephones or analog modems) and a plain old telephone service (POTS) line. The DSL filter prevents interference between such devices and a digital subscriber line (DSL) service connected to the same line. Without DSL filters, signals or echoes from analog devices at the top of their frequency range can reduce performance and create connection problems with DSL service, while those from the DSL service at the bottom of its range can cause line noise and other problems for analog devices.

The concept of a low pass filter for ADSL was first described in 1996 by Vic Charlton when working for the Canadian Operations Development Consortium: Low-Pass Filter On All Phones.DSL filters are passive devices, requiring no power source to operate. Some high-quality filters may contain active transistors to refine the signal.

Dust Networks

Dust Networks, Inc. is a company specializing in the design and manufacture of wireless sensor networks for industrial applications including process monitoring, condition monitoring, asset management, Environment, Health and Safety (EHS) monitoring and power management. They were acquired by Linear Technology, Inc in December 2011, which in turn was acquired by Analog Devices, Inc in 2017. The Dust Networks product team operates in the IoT Networking Platforms group of Analog Devices.

Dust Networks works with industry and standards groups such as WirelessHART, IEEE and IETF to help drive the adoption of interoperable wireless sensor networking products.

Floating body effect

The floating body effect is the effect of dependence of the body potential of a transistor realized by the silicon on insulator (SOI) technology on the history of its biasing and the carrier recombination processes. The transistor's body forms a capacitor against the insulated substrate. The charge accumulates on this capacitor and may cause adverse effects, for example, opening of parasitic transistors in the structure and causing off-state leakages, resulting in higher current consumption and in case of DRAM in loss of information from the memory cells. It also causes the history effect, the dependence of the threshold voltage of the transistor on its previous states. In analog devices, the floating body effect is known as the kink effect.

One countermeasure to floating body effect involves use of fully depleted devices. The insulator layer in FD devices is significantly thinner than the channel depletion width. The charge and thus also the body potential of the transistors is therefore fixed. However, the short-channel effect is worsened in the FD devices, the body may still charge up if both source and drain are high, and the architecture is unsuitable for some analog devices that require contact with the body. Hybrid trench isolation is another approach.While floating body effect presents a problem in SOI DRAM chips, it is exploited as the underlying principle for Z-RAM and T-RAM technologies. For this reason, the effect is sometimes called the Cinderella effect in the context of these technologies, because it transforms a disadvantage into an advantage. AMD and Hynix licensed Z-RAM, but as of 2008 had not put it into production.

Another similar technology (and Z-RAM competitor) developed at Toshiba and refined at Intel is Floating Body Cell (FBC).

Fractional-order integrator

A fractional-order integrator or just simply fractional integrator is an integrator device that calculates the fractional-order integral or derivative (usually called a differintegral) of an input. Differentiation or integration is a real or complex parameter. The fractional integrator is useful in fractional-order control where the history of the system under control is important to the control system output.

Jerald G. Fishman

Jerald G. Fishman (1945 - March 28, 2013) was an American electrical engineer and businessman. He served as Chief Executive Officer and President of Analog Devices since November 1996 until his death in March 2013. He was a 35-year veteran of Analog Devices and also served on the Board of Directors of Analog Devices, Cognex Corporation and Xilinx Inc.

Linear Technology

Linear Technology Corporation designs, manufactures and markets a broad line of standard high performance analog integrated circuits. Applications for the company's products include telecommunications, cellular telephones, networking products, notebook and desktop computers, video/multimedia, industrial instrumentation, automotive electronics, factory automation, process control, military and space systems.

The company was founded in 1981 by Robert H. Swanson, Jr. and Robert C. Dobkin. In August 2010, Forbes called the company "one of the tech industry's most profitable companies".In July 2016 Analog Devices agreed to buy Linear Technology for 14.8 billion dollars. This acquisition was finalized on March 10, 2017.

Microchip Technology

Microchip Technology Inc. is an American publicly-listed corporation that is a manufacturer of microcontroller, mixed-signal, analog and Flash-IP integrated circuits. Its products include microcontrollers (PIC, dsPIC, AVR and SAM), Serial EEPROM devices, Serial SRAM devices, embedded security devices, radio frequency (RF) devices, thermal, power and battery management analog devices, as well as linear, interface and wireless solutions.

Examples of these solutions include USB, zigbee, MiWi, LoRa, SIGFOX and Ethernet.

Corporate headquarters are located in Chandler, Arizona, with wafer fabs in Tempe, Arizona, Gresham, Oregon, and Colorado Springs, Colorado, assembly/test facilities in Chachoengsao, Thailand and Calamba, Philippines. Sales for the fiscal year ending on March 31, 2018 were $3.981 billion.Notable products include PIC microcontrollers, MPLAB development software and hardware and PICkit for hobbyists.

Outline of trigonometry

Trigonometry is a branch of mathematics that studies the relationships between the sides and the angles in triangles. Trigonometry defines the trigonometric functions, which describe those relationships and have applicability to cyclical phenomena, such as waves.

Paul Brokaw

Paul Brokaw is an expert on integrated circuit design who has spent most of his career at Analog Devices, where he holds the position of Analog Fellow. He is the inventor of many analog IC circuits, including the Brokaw bandgap reference and holds over 100 patents. He is also an IEEE Fellow.

Ray Stata

Raymond Stuart Stata (born 1934) is an American entrepreneur, engineer and investor.

Reference circuit

A reference circuit is a hypothetical electric circuit of specified equivalent length and configuration, and having a defined transmission characteristic or characteristics, used primarily as a reference for measuring the performance of other, i.e., real, circuits or as a guide for planning and engineering of circuits and networks.

Normally, several types of reference circuits are defined, with different configurations, because communications are required over a wide range of distances. Another type of reference circuit shows how to configure integrated circuits into function blocks, which Analog Devices provides for electrical design engineers. Analog Devices' Circuits from the Lab reference circuits are fully tested and come with the schematics, evaluation boards, and device drivers necessary for system integration. A group of related reference circuits is also called a reference system.

Super Harvard Architecture Single-Chip Computer

The Super Harvard Architecture Single-Chip Computer (SHARC) is a high performance floating-point and fixed-point DSP from Analog Devices. SHARC is used in a variety of signal processing applications ranging from single-CPU guided artillery shells to 1000-CPU over-the-horizon radar processing computers. The original design dates to about January 1994.

SHARC processors are or were used because they have offered good floating-point performance per watt.

SHARC processors are typically intended to have a good number of serial links to other SHARC processors nearby, to be used as a low-cost alternative to SMP.


TigerSHARC refers to a family of microprocessors currently manufactured by Analog Devices Inc (ADI).


A touchpad or trackpad is a pointing device featuring a tactile sensor, a specialized surface that can translate the motion and position of a user's fingers to a relative position on the operating system that is made output to the screen. Touchpads are a common feature of [Laptop|laptop computer]s, and are also used as a substitute for a [Computer mouse|mouse] where desk space is scarce. Because they vary in size, they can also be found on personal digital assistants (PDAs) and some [[portable media player]s..


In computing, uClibc (sometimes written µClibc) is a small C standard library intended for Linux kernel-based operating systems for embedded systems and mobile devices. uClibc was created to support μClinux, a version of Linux not requiring a memory management unit and thus suited for microcontrollers (uCs; the "u" is a Latin script typographical approximation - not a proper romanization, which would be letter "m" - of μ for "micro").Development on uClibc started around 1999. uClibc was mostly written from scratch, but has incorporated code from glibc and other projects. The project lead is Erik Andersen, and the other main contributor is Manuel Novoa III. Licensed under the GNU Lesser General Public License, uClibc is free and open-source software.

uClibc is much smaller than the glibc, the C library normally used with Linux distributions. While glibc is intended to fully support all relevant C standards across a wide range of hardware and kernel platforms, uClibc is specifically focused on embedded Linux systems. Features can be enabled or disabled according to space requirements.

uClibc runs on standard and MMU-less Linux systems. It supports i386, x86-64, ARM (big/little endian), Atmel AVR32, Analog Devices Blackfin, Renesas/Hitachi H8 (h8300), Motorola m68k, MIPS (big/little endian), IBM PowerPC, SuperH (big/little endian), Sun SPARC, and Renesas/NEC v850 processors.

uClibc-ng is a fork of uClibc announced on the OpenWRT mailing list in July 2014 after more than two years had passed without a uClibc release, citing a lack of any communication from the maintainer.. At present, the original projects author publishes no more updates, but references to the still actively developed fork uClibc-ng for current releases.

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