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Phyworks Ltd. was a UK-based fabless semiconductor company specializing in the design and supply of high-speed integrated circuits (ICs) for optical networking and communication systems. They were renowned for their expertise in physical layer (PHY) devices, particularly for standards like 10G Ethernet, SONET/SDH, and Fibre Channel. Phyworks focused on delivering solutions that enabled faster and more cost-effective optical data transmission. The company was acquired by Maxim Integrated Products in April 2010, which sought to strengthen its portfolio in optical transceivers. Maxim Integrated was subsequently acquired by Analog Devices Inc. (ADI) in 2021.
Served as the primary center for research and development, engineering, corporate management, sales, marketing, and administrative operations for Phyworks' global activities in high-speed optical IC development.
Located in Temple Quay, a modern business and commercial development in central Bristol. The offices likely offered contemporary facilities suitable for a high-tech company, though specific architectural details are not widely publicized post-acquisition.
As a pioneering fabless semiconductor company, Phyworks likely fostered an innovative, agile, and engineering-centric work culture. The environment would have been fast-paced, focusing on cutting-edge technology development to compete in the demanding optical communications market.
The Bristol headquarters was pivotal as the operational core and R&D hub where Phyworks developed its advanced PHY ICs. It represented a key contributor to the UK's technology sector, particularly within the 'Silicon Gorge' tech cluster.
While headquartered in the UK (Bristol) and with a key office in the US (San Jose, CA), Phyworks served a global customer base. Its high-speed optical ICs were integrated into optical modules and networking systems deployed worldwide by leading telecommunications and data communications equipment manufacturers. This was supported by a network of direct sales and distribution partners in various regions.
One, The Crescent, Temple Quay (Historical)
Bristol
England
United Kingdom
Address: 2033 Gateway Place, Suite 500, San Jose, CA 95110, USA (Historical)
To provide direct support and foster business development within the significant North American market for optical communication components, and to maintain a presence in a key global technology hub.
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As of April 2025, Phyworks' leadership includes:
Phyworks has been backed by several prominent investors over the years, including:
Phyworks was acquired by Maxim Integrated in April 2010 and subsequently ceased to operate as an independent entity. Therefore, there have been no executive new hires or exits for Phyworks in the last 12 months. The company is no longer active.
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Based on common corporate email patterns for UK-based technology companies of its era, Phyworks likely used formats such as [first].[last]@phyworks.com or [first_initial][last]@phyworks.com. The domain @phyworks.com is no longer active.
[first].[last]@phyworks.com or [first_initial][last]@phyworks.com (presumed)
Format
jane.doe@phyworks.com or jdoe@phyworks.com (example)
Example
0%
Success rate
EE Times / Maxim Integrated Press Release • April 20, 2010
Maxim Integrated Products announced its acquisition of Phyworks Ltd., a UK-based fabless semiconductor company specializing in 10Gbps physical layer (PHY) ICs for optical communications. The acquisition aimed to enhance Maxim's portfolio for optical transceivers and high-speed interconnects....more
LightReading / EE Times UK • October 30, 2006
Phyworks Ltd. secured $12.5 million in a Series C funding round. The round was led by Esprit Capital Partners and included existing investors Addiego, Advent Venture Partners, and Mezzanine Management. The funds were intended to accelerate the development and market introduction of its 10Gbps optical networking ICs....more
Lightwave / BusinessWire • March 26, 2007
Phyworks introduced its PHY1095, promoted as the world's first transimpedance amplifier (TIA) fully compliant with the IEEE 802.3aq 10GBASE-LRM standard. This development aimed to enable lower-cost 10 Gigabit Ethernet optical modules for transmission over multi-mode fiber....more
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