Implantable medical devices (IMD) are nowadays widely employed to restore functions to the impaired individuals suffering from diseases like deafness, blindness, cardiac insufficiency, incontinence, neural disorders, and many more. Such implantable systems become increasingly challenging, if a large number of sensing or stimulating sites needs to be realized - space and power budget, safety issues, high bidirectional data rates, as well as the vast number of electrical interfaces make the electronic circuit design a complex task of research and development. This talk will highlight some of the recent worldwide advances towards the realization of high channel count implantable neural interfaces, covering applications and system examples such as the retinal implant and neural modulators with high efficiency frontends, as well as give an overview of the supporting circuitry, such as transcutaneous data telemetry including safety and security aspects, power telemetry, and adaptive power management.
Maurits Ortmanns received the Dr.-Ing. degree in microsystems engineering from the University of Freiburg, Germany, in 2004, with highest honors. From 2004 - 2005, he has been with sci-worx GmbH, Hannover, Germany, where he was working in the field of mixed-signal circuits for biomedical implants. In 2006, he was appointed Assistant Professor for Integrated Interface Circuits at the Institute for Microsystems Engineering at the University of Freiburg. Since May 2008, Prof. Ortmanns is full professor at the Faculty of Electrical Engineering and Computer Science at the University of Ulm, where he heads the Institute of Microelectronics.Prof. Ortmanns' main research interests include mixed-signal integrated circuit design, self-correcting and reconfigurable analog circuits, with special emphasis on data converters and implantable electronics.Prof. Ortmanns received the VDI and the VDE award in 1999, Best Student Paper Awards at MWSCAS 2009 and at SampTA 2011, the ITG Publication Award 2015, best demo awards at ICECS 2016 and SENSORS 2017, and the faculty teaching awards 2012 and 2015.He served as program committee member of ESSCirC, DATE, ICECS, and ECCTD, as Associate Editor of the IEEE Transactions of Circuits and Systems I and II and as Guest Editor of the IEEE Journal Solid State Circuits. Prof. Ortmanns was a Technical Program and Executive Committee member of the IEEE International Solid-State Circuits Conference (ISSCC) between 2012-2016 and the European Regional Chair of ISSCC 2015. He holds several patents, is author of the book "Continuous-Time Sigma-Delta A/D Conversion" and several other book chapters, and he contributed more than 250 IEEE journal and conference papers