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This section provides an overview for logarithmic amplifiers as well as their applications and principles. Also, please take a look at the list of 7 logarithmic amplifier manufacturers and their company rankings. Here are the top-ranked logarithmic amplifier companies as of December, 2024: 1.OHM Technologies, 2.L3 Narda-MITEQ, 3.Anadyne Inc..
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A logarithmic amplifier is an amplifier that outputs a logarithmic conversion of an input signal. As it compresses the input signal and then outputs it, logarithmic amplifiers find application in situations where handling signals with a broad input range is necessary. Since the frequency and temperature characteristics vary depending on the configuration of the logarithmic amplifier, it is necessary to select the appropriate configuration for the application. An amplifier that restores the signal compressed by a logarithmic amplifier is called an anti-log amplifier (inverse logarithmic amplifier).
Logarithmic amplifiers can be used, for example, to compress an analog signal with a wide dynamic range that varies by digits to fit the input range of the ADC when the analog signal is converted to a digital signal by an A/D converter (ADC). For example, logarithmic amplifiers are used to adapt a signal whose amplitude variation exceeds 100dB to a standard operational amplifier or ADC with a dynamic range of 60dB to 100dB. Logarithmic amplifiers are used in many systems, including communication systems, measurement systems, and acoustic systems.
Logarithmic amplifiers are configured to provide high gain for low-level signals and progressively lower gain for higher-level signals. There are two main types of logarithmic amplifier configurations. These are the multi-stage logarithmic amplifiers and the DC logarithmic amplifiers.
In a multistage log amplifier, several stages of linear amplifiers are connected in series, and the outputs of each stage are added together. Low-level signals are amplified sequentially by several stages of linear amplifiers to achieve high gain. As the signal becomes higher level, a logarithmic output characteristic can be obtained by controlling how many stages of linear amplifiers are added up to the output of the linear amplifiers.
DC logarithmic amplifiers are achieved by using a diode in the feedback of the inverting amplifier circuit of an operational amplifier. Instead of a diode, a diode-connected transistor can be used. By using the logarithmic portion of the voltage and current characteristics of the diode or transistor, a logarithmic output can be obtained.
*Including some distributors, etc.
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Narda-MITEQ, founded in 1953 as Nassau Research & Development Associates (Narda) and currently a subsidiary of J.F. Lehman & Company, is an American manufacturer headquartered in Hauppauge, New York, specializing in radio frequency (RF) and microwave products. Catering to both commercial and military applications, the company offers both active and passive components, including microwave and RF products and sub-systems, as well as adapters, power dividers, and waveguide products. The company also offers products for satellite communication (SATCOM) and hardware for space-flight missions. Moreover, the company supplies integrated microwave assembly (IMA) products and subsystems, as well as customized components, assemblies, and systems.
Founded in 1979, Analog Modules, Inc. (AMI) is a specialized manufacturer of analog electronic products with applications in the electro-optics and laser industries. The company supplies clients with a range of sensors and amplifiers, as well as laser, rangefinding, and tracking electronics. These include switch laser diode and pockels cell drivers, capacitor charging power supplies, various laser rangefinder receivers, and photodetector-amplifier modules like transimpedance amplifiers and avalanche photodiodes. AMI also offers custom design and development to meet unique customer applications, as well as technical support and repair services for their products.
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.
ShenZhen Ronghua Technology co., LTD is a sensor and USB camera modules and optical lenses manufacturer established in China in 2013. In its catalogue, the company also includes electronic components, PCB plate making and SMT patch/plug-in processing. Its products are not only sold in China, but also exported to various countries and regions, including Europe, America and Southeast Asia. The firm has obtained ISO9001, CE, ROHS, UL and SGS certificates. It can also issue certificates of analysis/conformance; insurance; origin, and other export documents.
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.
OHM Technologies, established in 2003, is an Indian-based manufacturer and distributor of scientific electronic equipment. The company's product range encompasses trainer kits, educational trainer kits, and laboratory trainer kits. The company also offers analog and digital electronics, and optoelectronic devices, among others. These products serve various sectors, including education, pharmaceuticals, chemicals, and research. With advanced CAD/CAM facilities, the company designs products that align with current market demands. OHM provides installation and operational training along with on-site support to clients locally and in international markets such as Asia, Africa, the Middle East, and beyond.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | OHM Technologies |
21.6%
|
| 2 | L3 Narda-MITEQ |
19.6%
|
| 3 | Anadyne Inc. |
17.6%
|
| 4 | Analog Devices, Inc. |
15.7%
|
| 5 | Analog Modules, Inc. |
13.7%
|
| 6 | ShenZhen Ronghua Technology co., LTD |
5.9%
|
| 7 | Texas Instruments |
5.9%
|
Derivation Method
The ranking is calculated based on the click share within the logarithmic 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
|
4 | 66.7% |
|
China
|
1 | 16.7% |
|
India
|
1 | 16.7% |
2 products found
2 products
Optoscience Co., Ltd.
40+ people viewing
Last viewed: 8 hours ago
Standard Response
■Summary The Model 384 provides fast logarithmic signal compression from microvolts to volts with high linearity. Both positive and negative polari...
Japan Koshuha Co., Ltd.
50+ people viewing
Last viewed: 6 hours ago
■Features ・Wide dynamic range -30dB to -5dBm - Excellent linearity of output characteristics. ・Linearity error within ±0.1dB/Input -30dBm to -5dB...
