About AnSem

A leading fabless ASIC Design Service company

The vision of AnSem is to be the leading fabless ASIC Design Service company, by bringing innovation on chip. Its mission is designing and delivering state-of-the-art analog and mixed-signal integrated circuits to customers worldwide by successfully selecting and executing projects that serve as a reference to our skills. AnSem aims at delivering customer satisfaction that results in repeat business through identifying – jointly – customer requirements and expectations in terms of quality, performance, timescales and costs.

In order to achieve its mission, AnSem invests in attracting and retaining the best technical staff, capable of closely working with customers in order to define the most appropriate chip. AnSem operates a customer oriented design methodology, focused on the requirements of the clients.

AnSem offers two complementary business models:

  • Custom mixed-signal IC design
  • Turnkey ASIC solutions based on a combination of in-house competences and a solid network of trusted suppliers and subcontractors.

AnSem NV was established by Stefan Gogaert and Jan Crols on February 13th 1998 as a spin-off from KULeuven and imec. The headquarters are based in Heverlee (Leuven). On December 16th 2016, AnSem becomes an international company by establishing an affiliate design center in Enschede, The Netherlands.

The customers of AnSem are mainly leading system OEM companies and (fabless) semiconductor companies, predominantly active in health, industrial, consumer and automotive markets.

AnSem NV has more than 500 years of ASIC design experience and the team has completed more than 70 projects. AnSem is ISO 9001:2015 certified since September 2016 and carries the ISO 9001 certificate since 2007. To download our quality certificate, click here.

The board of directors consists of:

Why AnSem?

We bring innovation on chip, flexible to your needs.

Proven leader in analog, RF & mixed-signal ASIC development

Key design expertise in wireless and wired data transmission, sensor data acquisition, high voltage and ultra-low power applications

Strong customer-orientation serving customers worldwide

Established industrial network of foundries, test and package suppliers, capable of delivering high-performance, reliable and cost-effective solutions

Committed to quality & innovation

Board of Directors

Willy Sansen - Independent Director & Chairman

Willy Sansen received a PhD degree from U.C.Berkeley in 1972. Since 1980 he has been full professor at the Catholic University of Leuven, in Belgium. From 1984 to 2008, he has headed the ESAT-MICAS laboratory on analog design, which has created six spinoffs in the last fifteen years. He has been supervisor of sixty-four PhD theses and has authored and coauthored more than 650 publications and fifteen books among which the Powerpoint slide based book "Analog Design Essentials" (Springer 2006)

He is a member of several editorial and program committees of journals and conferences. He was Program chair of the ISSCC-2002 conference and President of the IEEE Solid-State Circuits Society in 2008-2009. He is the recipient of the D.O.Pederson award of the IEEE Solid-State Circuits in 2011. He is a Life Fellow of the IEEE.

Willy Sansen

Ludo Deferm - Director

Ludo Deferm received the Electrical Engineering Degree in Electronics and Mechanics in 1982 and the Ph.D. Degree in 1989 from the University of Leuven, Belgium.

From 1982 to 1985 he was a research assistant at the University of Leuven, being responsible for thedevelopment of a 3 µm CMOS process for external customers with the main area in the device physics forscaling CMOS processes.

In 1985 he joined imec in Belgium where he was involved in the development of CMOS processes. In 1992 he became head of the Si Process Development Group and in 1998 he proceeded his career as adjunct vice president of the Silicon Technology and Device Integration division.

In October 1999 he was appointed Vice President of Business Development for imec, being responsible for business development worldwide, for the legal and IP/patent group and for the public relations and marketing communications activities. Within the scope of his responsibilities he is actively involved in the creation of new spin-off companies and in the expansion of imec.

Since 2006 he is Executive Vice President and Head of Corporate, Business and Public Affairs of imec and is responsible for government relations. He is currently member of the Board of Directors of the imec affiliates mentioned hereafter Fidimec, imec Nederland, imec Taiwan, imec China and imec India. He is member of the Board of Directors of the following external companies: Xenics nv, Holst Centre, Trinean, Energyville, RVO-Society, Pepric and Essensium. He is also advisor to TNO, Crann Institute, University Gent and the SOFI Fund.

Luc Kindt - Independent Director

Luc Kindt is currently Managing Principal and CEO of the private equity group Leeward in Luxemburg, after having been for 6 years the Executive Board & Managing Partner of the venture capital and private equity QAT group, also in Luxemburg.

Prior to his engagements in the private equity world, Luc has been a Group Senior Vice President of Barco NV, where he has held several positions, among others, President Global Sales & Services and CEO of Barco Projection Systems.

Luc is an independent board member and advisor in various high-tech companies, is a member of IMEC's Scientific Advisory Board, is an advisor for eHealth to Agoria and is Chairman of the Board of the RVO Society Foundation.

Luc holds a Master in Electronics Engineering from the University of Leuven, Belgium and an MBA from the Vlerick Management School of Ghent, Belgium.

Stefan Gogaert - Executive Director

As AnSem's Chief Executive Officer and Chief Operations Officer, Stefan takes responsibility for strategic alliances, Finance, HR and ICT. He is also involved in setting up collaborative research projects with other companies and research institutes.

After his graduation, Stefan joined the group of Prof. Willy Sansen at the University of Leuven, Belgium, to conduct research on portable wireless EMG measuring systems and on integrated circuits for high-speed data communication.

In 1998 he co-founded AnSem and grew the company successfully to a well established design service company with customers worldwide.

Stefan Gogaert holds a Master in Electrical Engineering and a Postgraduate in Biomedical Engineering from the Catholic University of Leuven, Belgium.

Jan Crols - Executive Director

In 1998, Jan co-founded AnSem, where he is currently active as Chief Executive Officer and Chief Technology Officer. In this function he has overall technical responsibility for all developments in the area of wireless and wired data transmissions, data acquisition and ultra low power designs, implemented in CMOS technologies ranging from 0.35 µm to 40 nm.

Jan has published 30 articles in international scientific journals and 1 book. He is a member of the ESSCIRC & ISSCC technical program committees. Jan has been awarded the 1995 IEEE Solid-State Circuits Council Pre-doctoral Fellowship and the 1999 IEEE Circuits and Systems Society Guilleman-Cauer Award. Jan has extensive experience in project management in all the fields in which AnSem is active.

Jan holds a PhD in electrical engineering from the Catholic University of Leuven, Belgium.


The AnSem Network

IC design & ASIC solutions

For customers worldwide

Privacy Policy

Your privacy is important to AnSem.

Does AnSem comply with the Belgian and European legislation?

The organisation responsible for processing the information, AnSem NV, Esperantolaan 9, 3001 Heverlee, complies with the Belgian Act of 9 December 1992 on protection of privacy and the processing of personal data.

As of 25 May 2018, the above-mentioned act will be replaced by European regulation 2016/679 of 27 April 2016 ‘on the protection of natural persons with regard to the processing of personal data and on the free movement of such data’ (the ‘GDPR’). This General Data Protection Regulation (GDPR) must be applied in the same way throughout the European Economic Area (EEA). AnSem has charted out the necessary processes for compliance with the GDPR, both in terms of data collection and data protection.

What data is collected for which purposes?

· Personal data provided will not be retained longer than necessary for the related information exchange.

· If external parties are involved in the data processing, AnSem shall take the necessary steps to ensure that these parties also comply with the GDPR.

· All data processed via the website is secured via SSL (Secure Socket Layer) with encryption of all data.

· If third parties are used in the processing of personal data, AnSem gives a commitment that these companies also operate in compliance with the GDPR.              

A. If you make a sales request – in person, via a website, e-mail, fax, by phone or in any other form – the personal data you provided will be used to create your customer profile in our ERP package in order to be able to answer your sales question. This data can be used by the Sales staff in their Outlook file for sales follow-up and by the marketing department in the e-mail program to keep you informed of events, new products and services and/or other marketing activities. Only if necessary for further sales follow-up of your request, this data may be passed on to third parties, e.g. distributors in specific segments or countries.

B. If you register for our newsletter, the personal details that you provide to us will only be processed in our newsletter program via an .xls upload. By registering for the newsletter, you are giving your explicit permission for this.

C. If you are a supplier, the data necessary for a commercial relationship will be treated as described in point A above.

D. If you are a press contact, your data is merely maintained in a PR database, solely with the intention of being able to send you press releases from AnSem and any partners.

E. If you are an employee, the personal details and household details that you have provided are passed on by the HR department to an external social partner for payroll administration, the granting and monitoring of fringe benefits, and/or other necessary personnel-related activities.

F. If you are a job applicant but are ultimately not recruited, there is a possibility that the personal details that you provided in connection with your job application are subsequently kept in a central location in the recruitment reserve. This location is only accessible for a few authorized people.

Inspection, correction and deletion of the personal data

You have a legal right to inspect your personal data and, if necessary, request that it be corrected. Provided that you send us evidence of your identity (a copy of your identity card), you can make a written, dated and signed request to info@ansem.com for the attention of the Marketing Manager, asking to be sent a written copy of the personal data that we hold on file for you. If necessary, you can also ask to have the data corrected if it is incorrect, incomplete or irrelevant.

In case of use of data for direct marketing: you can object, free of charge, to the use of your data for direct marketing or newsletters. In every automated e-mail, you have the possibility of unsubscribing, or you can send an e-mail to info@ansem.com for the attention of the Marketing Manager. You should be aware that once you have unsubscribed, you can only register again with the same e-mail address by sending a specific written request to the Marketing Manager. Automatic registration is no longer possible.

Unless specified above, your personal data will not be passed on to third parties.

AnSem can collect anonymized or aggregated data of a non-personal nature, such as browser type or IP-address, the operating system that you use or the domain name of the website via which you came to our website, or which you went to when you left our site. This enables us to continually optimize the website for users.

Protection of personal data

AnSem will take the necessary steps to store the personal data provided in a secure manner and – if applicable – to transfer it. This can be in electronic or non-electronic form by means of hierarchical access control, logical access restrictions, the necessary IT firewall and IT back-up systems. 

The use of ‘cookies’

During a visit to the site, ‘cookies’ may be stored on your computer’s hard disk. A cookie is a text file that is stored by the server of a website in the browser of your computer or your mobile device when you consult a website. Cookies cannot be used to identify persons, a cookie can only identify a machine.

‘First party cookies’ are technical cookies that are used by the sites that is being visited, and which are intended to make the site function optimally. Example: settings that the user changed during previous visits to the site, or: a form completed with data that the user entered during previous visits.

‘Third Party cookies’ are cookies that don’t come from the website itself, but from third parties, for example a marketing or advertisement plug-in. Examples of this are cookies from Facebook or Google Analytics. For this kind of cookie, the visitor to the site must first give permission – which can be done via a bar at the bottom or the top of the web page referring to this policy, which does not prevent continued browsing on the website.

You can set up your Internet browser so that cookies are not accepted, or so that you receive a warning if a cookie is installed or so that cookies are removed from your hard disk after you leave the site. You can do this via the Settings of your browser (via the Help function). Please bear in mind that some graphic elements cannot display correctly, or that you may not be able to use certain applications.

By using our website, you accept our use of cookies.

Google Analytics

This website makes use of Google Analytics, a web analysis service which is provided by Google Inc. (“Google”). Google Analytics uses “cookies” (text files that are stored on your computer) in order to help the website analyze how users use the site. The information generated by the cookie about your use of the website (including your IP address) are transferred to Google and stored by it on servers in the United States. Google uses this information to update how you are using the website, to generate reports about website activity for site operators and to offer other services relating to website activity and Internet use. Google is allowed to provide this information to third parties if Google is legally obliged to do so, or if those third parties are processing the information on behalf of Google. Google will not combine your IP address with other data that Google has at its disposal. You can refuse the use of cookies by choosing the appropriate settings in your browser. We point out that in that case, you will probably not be able to use all the functionality of the website. By making use of this website, you are giving your consent for the processing of the information by Google in the way and for the purposes described above.