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This section provides an overview for operational amplifiers as well as their applications and principles. Also, please take a look at the list of 24 operational amplifier manufacturers and their company rankings. Here are the top-ranked operational amplifier companies as of December, 2024: 1.DATEL, 2.Advanced Linear Devices, Inc, 3.Microsemi Corporation.
Table of Contents
An operational amplifier is an integrated circuit with two input terminals and one output terminal that can amplify an input electrical signal and output it.
It is also called an op amplifier. By designing the circuit elements connected to an operational amplifier, it can not only amplify but also provide arithmetic functions such as addition, subtraction, and time integration of input voltages.
Today, analog amplification circuits that take advantage of these features are widely used.
A wide variety of circuits use op-amps, including:
Op-amps are used in the field of sensor amplifiers to amplify various small signals output from microphones, optical sensors, pressure sensors, etc., to a signal level that can be handled by an A/D converter. In order to avoid the influence of noise, differential amplifiers or bandpass filters are used to remove noise outside the frequency band of the signal.
Op-amps are also used as voltage followers. A high impedance signal source is vulnerable to noise and cable lengths cannot be extended. However, if an op-amp is placed near the signal source as a voltage follower, the signal can be sent out with the op-amp's low output impedance. The use of op-amps allows for longer cables to reduce the effects of noise.
Operational Amplifier consists of two input terminals and one output terminal and has the following ideal characteristics:
In practice, the open-loop gain is more than 90 dB, the input current is several nA to 1 μA, and the output impedance is 0.1 Ω to several Ω. In principle, the above assumptions can be made.
In addition, the two input terminals of the op-amp have the following functions:
Op-amps can be classified in terms of "elements," "power supply configuration," and "characteristics".
The following three types of op-amps are classified according to the elements that make up the circuit:
Operational Amplifier can be classified into the following two types according to its power supply configuration:
Op-amps are supplied with different characteristics that are particularly important for different applications. Below are some examples of op-amps. The appropriate device must be selected based on the required specifications.
Op amps have error factors unique to analog circuits. In addition, deviations from the ideal characteristics described in the section "Principles of Op Amps" may adversely affect circuit operation. Therefore, measures to avoid them are necessary. Specific measures are described below:
Other precautions are listed below, but please refer to specialized literature or materials provided by op amp manufacturers for individual measures.
Since op-amps have extremely high open-loop gain, the various functions described in the previous section can be realized by properly setting the feedback circuit from the output terminal to the input terminal. The following two basic amplification circuits using op-amps are explained here as actual examples.
1. Inverting Amplifier
The signal Vi is connected to the inverting input terminal via a resistor Ri, and the inverting input terminal and output terminal are connected by a resistor Rf. The non-inverting input terminal is connected directly to ground. The output signal Vo obtained with this configuration is (-Rf/Ri) × Vi." The "-" indicates that the phase is inverted.
2. non-inverting amplifier
The signal Vi is directly connected to the non-inverting input terminal. The inverting input terminal is grounded via Ri and connected to the output terminal via Rf. The output signal Vo obtained with this configuration is (Rf/Ri) × Vi.
*Including some distributors, etc.
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DATEL is an American manufacturer of data acquisition systems originally founded in 1970 before its acquisition by the Data Device Corporation in 2020. Based in Mansfield, Massachusetts, the company primarily produces linear voltage regulators and DC-to-DC converters, as well as data acquisition components such as signal conditioners and digital panel meters. These are used in industrial processes requiring precise measurement of physical and environmental data (e.g. electronic imaging). DATEL products are used by clients in various hi-tech industries, including in the space exploration, medical device manufacturing, and national defense sectors.
Advanced Linear Devices Inc., founded in 1985 with headquarters in the USA, is a manufacturer of CMOS linear integrated circuits. The company's product line includes ultra-low input signal power rail-to-rail CMOS operational amplifiers, ultra-low charge injection low voltage analog switches, precision CMOS voltage comparators with high output current drivers, and low drift CMOS timers with high discharge output for OEM manufacturers of industrial controls, instrumentation, computers, medical devices, automotive, and telecommunications products. The company also offers custom solutions for linear circuit designers and engineers.
Microsemi Corporation was founded in 1959 and is headquartered in Aliso Viejo, California. Microsemi is a subsidiary of Microchip Technology Incorporated. Microsemi is a provider of semiconductor and system solutions for aerospace, communications, data center, and industrial markets. A few of Microsemi’s product lines include high-performance and radiation-hardened analog mixed-signal integrated circuits, FPGAs, power management products, timing and synchronization devices, and RF solutions. Microsemi’s technological strengths are in connectivity, energy efficiency, miniaturization, power management, and security.
Incorporated in 1965, Analog Devices, Inc. designs, manufactures, tests, and markets integrated circuits (ICs), software, and subsystems that leverage analog, mixed-signal, and digital signal processing technologies. The company provides data converter products, power management and reference products for power conversion, driver monitoring, sequencing, and energy management applications in the automotive, communications, industrial, and high-end consumer markets. In addition, the company provides digital signal processing and system products for high-speed numeric calculations. It serves clients in the industrial, automotive, consumer, instrumentation, aerospace, and communications markets.
Advanced Monolithic Systems, established in 1988 and based in California, USA, is a manufacturer and supplier of integrated circuits. The product portfolio of the company includes voltage regulators, detectors, references, DC converters, operational amplifiers, and power distribution systems. The company also offers a wide range of standard analog bipolar and CMOS products which are accurate, strategic planning support, and technical services. The company has ISO-certified products. The products are used in various applications for telecommunication, computers, and electronic industries.
Diodes Incorporated is a supplier for the consumer electronics, computing, communications, industrial, and automotive markets. Diodes Incorporated designs, manufactures, and supplies application-specific standard products in the discrete, logic, analog, and mixed-signal semiconductor markets worldwide. It focuses on low pin count semiconductor devices. Diodes specializes in semiconductor products, such as MOSFET, TVS, and performance Schottky rectifiers, transient voltage suppressors and other devices. It also provides analog products, such as power management devices comprising AC-DC and DC-DC converters, signaling devices, CMOS devices, and analog switches. Diodes Incorporated was incorporated in 1959 and is headquartered in Plano, Texas.
Cirrus Logic Inc., established in 1984 and headquartered in Austin, Texas, United States, is a designer and manufacturer of high-precision analog and digital signal processing components. The company offers products such as audio amplifiers, haptic drivers, and volume controls. These products find use in audio system manufacturing and are utilized in sensing and power-related applications. A significant number of its components are integrated into smartphones, laptops, and digital wearables. It also offers services such as assisting with implementing combined hardware and software audio solutions, tuning services, and mechanical and acoustic product design.
Renesas Electronics Corporation was established in 2002 and is headquartered in Tokyo, Japan. Renesas is a global research, design, and manufacturer of semiconductors used in industries spanning automotive, consumer electronics, the internet of things, power & energy, and industrial sectors. Renesas manufactures both analog and digital products. Analog products include amplifiers, audio & video devices, data converters, PLC, and switches & multiplexers. Digital products include microcontrollers, memory components, sensors, wireless connectivity products, and others. Renesas also offers design resources such as kits, development tools, partner programs, and design tools.
MinebeaMitsumi Inc. was incorporated in 1951in Japan and manufactures and supplies machined components, and electronic devices and components globally. It operates through four segments: machined components, electronic devices and components, MITSUMI Business, and the U-Shin business segment. MinebeaMitsumi specializes in bearing products including spherical, roller, rod end, and ball bearings for aerospace. MinebeaMitsumi also produces products including precision mechanical assemblies, fasteners, other special components including clutches and brakes, motors, blowers, sensors and lighting devices. Additionally, MinebeaMitsumi offers its products for use in PCs and peripheral equipment, information and telecommunications equipment, household electrical appliances, automobiles, and aerospace.
PREMA Semiconductor, founded in Germany, in 1970 is a manufacturer of semiconductors. The company's product portfolio includes Microprocessors and Microcontrollers, Memory Devices, Analog and Digital Integrated Circuits, power management solutions and RF and Wireless Semiconductors. Their products are used in markets such as Automotive and Transportation, Telecommunications, Industrial Automation, Healthcare and Medical Devices and Aerospace and Defense. The company provides services such as Product Selection Guidance, prototyping, New Product Design and Development and Custom Manufacturing.
Nisshinbo Micro Devices Inc., established in 1959, and headquartered in Tokyo, Japan, is a manufacturer of semiconductors and electronic components. The company specializes in producing integrated circuits, discrete semiconductors, optoelectronic devices, which caters to industries such as telecommunications, automotive, and consumer electronics. The company holds ISO 9001 and IATF 16949 certifications, ensuring quality in their products which are used for various applications, including wireless communication, automotive systems, and industrial automation, providing crucial electronic components for advanced technologies in various industrial and commercial sectors.
Cissoid, founded in 2000 and headquartered in Mont-Saint-Guibert, Walloon Region, is a manufacturer of high temperature semiconductors. They deliver standard products and custom solutions for power management, power conversion and signal conditioning in extreme temperature and harsh environments. Their solutions range from system-on-chip to complete SiC and GaN based inverter platforms to support an ever-growing range of e-mobility and high-power applications. The company has been supplying products to leaders in the Oil & Gas, aeronautic, Industrial and automotive markets.
Unisonic Technologies Company Limited, established in 1990 in Asia, is a manufacturer and supplier of high-tech semiconductor devices and IC design, specializing in Power Management and Audio Power Amplifier IC. The company's product portfolio includes good quality semiconductor devices and ICs such as Power management ICs, Audio Power Amplifier ICs, and car radios. These products cater to various industries including PC, telecom, and consumer markets across Asia. Unisonic's integrated service model ensures competence in R&D, design, manufacturing, and marketing. Additionally, the company provides vital market information, relevant technology support, and a great customer experience to enhance its clients' success.
Toshiba Electronic Devices & Storage Corporation is a division of Toshiba focusing on providing designs for end-product developers as well as semiconductor and drive equipment for automotive, industrial equipment, green energy, and consumer and personal electronic devices. Toshiba’s storage products include cloud-scale and enterprise-level products, and PC hard drives. Semiconductor products include Si Cower devices, MOSFETs, IGBTs, IEGTs, isolators, solid state relays, power management and intelligent power ICs, diodes, bipolar transistors, microcontrollers, automotive devices, ICs for wireless communication equipment, general purpose logic ICs, radio-frequency devices, sensors, and linear image sensors.
Located in Austria and Germany, Ams-Osram is a sensor design and manufacturing company that specializes in compact form factors, low power, high sensitivity, and multi-sensor applications. They were established in 1981 and were formerly known as austriamicrosystems AG. In 2012 it changed its name to ams AG. They have a technology portfolio for sensing, lighting, and visualization, ranging from light emitters and optical components to micro-modules, integrated circuits, and related software. Their work develops technology for use in the consumer, industrial, medical, and automotive sectors.
Lision Technology Inc. is a Taiwanese manufacturer of discrete, motor and analog integrated circuit (IC) products established in 2001 and based in Zhongli City, Taoyuan. The company manufactures various discrete products including diodes and metal-oxide-semiconductor field-effect transistors (MOSFETs), analog products such as regulators and timers, and motor products including application-specific integrated circuits (ASICs). They also offer design support and capacity planning services for customers requiring technical assistance. Lision Technology Inc. primarily serves client companies and OEMs in the consumer electronics, computing, and communication sectors.
Monolithic Power Systems (MPS), founded in 1997 and headquartered in San Jose, California, is a manufacturer of integrated circuits (ICs). Their product range includes switch-mode power supplies (SMPS) for converting AC or DC power to lower voltage DC power, LED drivers for driving LED lights, battery management ICs to manage power in portable devices, power factor correction (PFC) ICs for improving power supply efficiency, and sensorless motor control ICs to control motors without position sensors. MPS's solutions find applications in consumer electronics, industrial, and automotive industries, offering efficient power management solutions to enhance various electronic devices.
ABLIC, Inc. is a manufacturer of analog semiconductors and integrated circuits (ICs) based in Minato-ku, Tokyo. Originally established in 2016, the company is a subsidiary of Seiko Instruments, Inc., and was renamed SII Semiconductor Corporation in 2018. The company produces memory, logic, and power management ICs, as well as various sensors for use in mobile computers, industrial equipment, wearable tech, and automotive systems. These supply clients in the consumer electronics, factory automation, and medical equipment industries.
System Logic Semiconductor, founded in Seoul, Korea in 1999 is a manufacturer of Semiconductors. The company's product portfolio includes Microcontrollers and Microprocessors, Analog and Digital Integrated Circuits, Memory Solutions, Power Management Devices and RF and Wireless Components. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. The company has a national distribution network, technical service and a customer support center.
ST Micro Electronics is a global semiconductor company serving customers with innovations to have a positive impact on people's lives. Their product line is micro electronic systems, such as switches, controllers, sensors and drivers. The main selling point of ST Micro Electronics is its provision of sustainable products, and introducing their electronics to create a more sustainable world. The company, as well as providing the electronic devices, also provides software and support, ensuring that all fields are covered to provide a fully provide a supported and strong relationship with their customer base. ST Micro Electronics believe that technology plays a key role in helping to solve environmental and social challenges, which is why their semiconductor technologies start with their employees, their customers and partners.
Texas Instruments Incorporated was founded in 1930 and is headquartered in Dallas, Texas. Texas Instruments is a producer of high tech equipment for industrial, automotive, personal electronics, communications equipment industries. Texas Instruments designs, manufactures, and sells semiconductors to electronics designers and manufacturers in the United States and internationally. Texas Instruments operates in two segments: analog and embedded processing. The Analog segment offers power products, including battery-management solutions, DC/DC switching regulators, power switches, linear regulators, voltage references, and lighting products. The Embedded Processing segment offers microcontrollers that are used in fields such as electronic equipment and digital signal processors for mathematical computations.
ELM Technology Corporation was established in 1990 in Tokyo, Japan as a designer, manufacturer, and distributor of analog semiconductors. The company's product database includes Logic ICs, High-Speed Logic IC, Voltage Comparator, Detector, and Regulator. Similarly, there are DC/DC converters, Optical sensors, Bipolar transistors, Operational amplifiers, and more. These semiconductors serve to provide smaller and lighter solutions to IT products and industries that need to apply low power consumption. These semiconductors are also used in portable devices, audiovisual products, and computer accessories, among others. The company also offers custom-made integrated circuits (ICs) to meet specific customer needs.
Taiwan Semiconductor, established in 1979 in Taiwan, is a manufacturer and distributor of integrated circuits and wafer semiconductor devices for commercial and industrial customers worldwide. The company's product line includes discrete power rectifiers, power transistors, LED driver ICs, analog ICs, and ESD protection devices. Taiwan Semiconductor has production facilities in China and Taiwan that are compliant with automotive and environmental standards, including IATF 16949, ISO 9001, and ISO 14001. Taiwan Semiconductor is also a member of the ECIA and the PSMA.
ROHM Semiconductor was incorporated in 1940 and is headquartered in Kyoto, Japan. ROHM manufactures and sells electronic components worldwide. ROHM operates through the segments ICs, discrete semiconductor devices, and modules. ROHM provides ICs comprising memory, amplifiers and linear, power management, clocks and timers, switches and multiplexers, logic, data converters, sensors and MEMS, display drivers, motor/actuator drivers, interfaces, communication and speech synthesis LSI, audio and video, and microcontrollers. ROHM also offers discrete semiconductor products include MOSFETs, bipolar transistors, and diodes; power devices, including power transistors and diodes, SiC power devices, IGBT, and IPM; passive devices, such as resistors, and conductive polymer and tantalum capacitors; and various modules among others.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | DATEL |
11.1%
|
| 2 | Advanced Linear Devices, Inc |
10.1%
|
| 3 | Microsemi Corporation |
5.8%
|
| 4 | Diodes Incorporated |
5.8%
|
| 5 | Nisshinbo Micro Devices Inc. |
5.6%
|
| 6 | Taiwan Semiconductor |
5.0%
|
| 7 | Toshiba Electronic Devices & Storage |
5.0%
|
| 8 | Analog Devices, Inc. |
4.5%
|
| 9 | Advanced Monolithic Systems |
4.2%
|
| 10 | ELM Technology Corporation |
4.0%
|
Derivation Method
The ranking is calculated based on the click share within the operational amplifier page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
7 | 38.9% |
|
Japan
|
6 | 33.3% |
|
Taiwan
|
2 | 11.1% |
|
Germany
|
1 | 5.6% |
|
Belgium
|
1 | 5.6% |
|
Austria
|
1 | 5.6% |
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