Search company, investor...

Founded Year



Series A | Alive

Total Raised


Last Raised

$2.42M | 1 yr ago

About eoSemi

eoSemi offers a solution for an all-silicon replacement for quartz crystal timing references. It uses standard CMOS process technology that provides a solution to miniaturization and integration with other silicon system devices. It offers temperature-compensated crystal oscillators (TCXO) for the deployment of 5G. The company was founded in 2005 and is based in Cheshire, U.K.

Headquarters Location

The Bromley Centre, Bromley Road, Congleton

Cheshire, England, CW12 1PT,

United Kingdom

01260 285880



Expert Collections containing eoSemi

Expert Collections are analyst-curated lists that highlight the companies you need to know in the most important technology spaces.

eoSemi is included in 1 Expert Collection, including Semiconductors, Chips, and Advanced Electronics.


Semiconductors, Chips, and Advanced Electronics

6,553 items

Companies in the semiconductors & HPC space, including integrated device manufacturers (IDMs), fabless firms, semiconductor production equipment manufacturers, electronic design automation (EDA), advanced semiconductor material companies, and more

eoSemi Patents

eoSemi has filed 3 patents.

The 3 most popular patent topics include:

  • oscillators
  • analog circuits
  • electronic design
patents chart

Application Date

Grant Date


Related Topics




Oscillators, Capacitors, Electronic design, Transistor types, Analog circuits


Application Date


Grant Date



Related Topics

Oscillators, Capacitors, Electronic design, Transistor types, Analog circuits



Latest eoSemi News

eoSemi secures £2 million Series A investment led by Capital-E

Dec 30, 2022

4 minutes read Round will facilitate the delivery of fully tested TCXOs to eoSemi’s lead customers and accelerate the shift to next gen digitally compensated, higher performing TCXOs Wednesday 21 December 2022: eoSemi , the world leader in the development of very high performing digitally compensated TCXOs – today announced it has completed a £2M Series A round of investment. The raise will enable eoSemi to complete its proprietary, low cost, auto-test solutions required to calibrate TCXOs in volume and begin the commercialisation of its revolutionary technology. The round was led by Belgian Venture Capital Investor Capital-E with substantial contributions from other existing investors. Historically TCXO and OCXO products have employed curve-fitting analog circuitry based on extremely mature 0.35um BiCMOS technologies which inherently deliver larger, power hungry and expensive solutions due to the complex nature of the manufacturing processing required. In contrast eoSemi uses a modern 65nm pure CMOS process to implement a digital solution which is much more accurate, smaller and with much lower cost. The performance is so good, the company expects to take a share of the OCXO market with a very low cost TCXO. “A combination of the silicon technology, careful design, digital compensation schemes and calibration ensures world beating performance” said Steve Cliffe, CEO of eoSemi. “Specifically; industry leading phase noise of 162dBc/Hz, power consumption of 3.6mW, ultra-tight stability of better than 50ppb: with this performance available right across an extended temperature range of -40oC to +105oC, and in a 2520 package or smaller. All of these parameters have been achieved before, but never all at the same time and never at this cost” he added. -ENDS- About eoSemi eoSemi is the world leading developer of precision digitally controlled TCXO silicon solutions delivering unparalleled technical performance.

eoSemi Frequently Asked Questions (FAQ)

  • When was eoSemi founded?

    eoSemi was founded in 2005.

  • Where is eoSemi's headquarters?

    eoSemi's headquarters is located at The Bromley Centre, Bromley Road, Congleton, Cheshire.

  • What is eoSemi's latest funding round?

    eoSemi's latest funding round is Series A.

  • How much did eoSemi raise?

    eoSemi raised a total of $10.16M.

  • Who are the investors of eoSemi?

    Investors of eoSemi include Capital-E, Nesta, Enterprise Ventures, Maven Capital Partners and IQD Frequency Products.

  • Who are eoSemi's competitors?

    Competitors of eoSemi include Abracon and 4 more.


Compare eoSemi to Competitors

Silicon Creations Logo
Silicon Creations

Silicon Creations is a company that specializes in high performance Clocking IP and mixed signal integrated circuit design services. The company offers a range of products including programmable ring oscillator- and LC oscillator-based PLL IP, SerDes IP and LVDS-based Video interface IP, which are used in various applications such as smart phones, wearables, consumer devices, processors, network devices and medical devices. Silicon Creations primarily serves sectors such as the smartphone industry, wearable technology industry, consumer electronics industry, and the medical device industry. It is based in Atlanta, Georgia.

Abracon Logo

Abracon is a global manufacturer of frequency control, signal conditioning, clock distribution, and magnetic components. Abracon offers a wide selection of quartz timing crystals, crystal and MEMS oscillators, real-time clocks, antennas, Bluetooth modules, ceramic resonators, SAW filters and resonators, inductors, transformers, circuit protection components, and wireless RF antennas. The company is ISO9001-2008 certified with design & application engineering resources in California & Illinois; and Sales offices in Texas, California, China, Taiwan, Singapore, Scotland, and Germany. Abracon's products are offered through its Global Distribution Network. The company was founded in 1992 and is based in Spicewood, Texas.

Excellicon Logo

Excellicon is a provider of electronic design automation (EDA) software tools. It provides a comprehensive platform of products that covers the entire range of timing constraints for authoring, compiling, verification, formal validation, and management using a multi-mode approach. It was founded in 2009 and is based in Laguna Hills, California.

Ball Wave

Ball Wave is engaged in the development, manufacture, and distribution of sensors, as well as research and development (R&D) and consultation services. The company has developed a ball surface acoustic wave (SAW) sensor, as well as a trace moisture sensor for the semiconductors. It was founded in 2015 and is based in Miyagi, Japan.


Psymetrix is a company that focuses on the operation and planning of electrical power systems within the energy sector. The company offers products and services that provide real-time measurement and monitoring for grid stability management, addressing the complex challenges of modern power systems. Its primary customers are power system operators and planners worldwide. It is based in Edinburgh, Scotland.

Ecliptek Logo

Ecliptek is a frequency control company that provides products such as crystal and oscillator. The company is based in Reno, Nevada.


CBI websites generally use certain cookies to enable better interactions with our sites and services. Use of these cookies, which may be stored on your device, permits us to improve and customize your experience. You can read more about your cookie choices at our privacy policy here. By continuing to use this site you are consenting to these choices.