High Temperature Electronics

200 Degree Celsius CMOS Op Amp

We (myself, Dr. Ivars Finvers, Dr. F. N. Trofimenkoff and our graduate students) have been developing analog integrated circuits for the past 14 years, with the assistance of the Alberta Microelectronic Centre, (now the Alberta Microelectronics Corporation), The Canadian Microelectronics Corporation, and NSERC. We have developed a capability to design and test circuits at high temperatures (to 350 degrees Celsius) and now have a fully equipped standards lab for doing precision measurements over a wide range of temperatures. We are able to design integrated circuits using standard digital CMOS processes for operation up to 200 degrees Celsius, and Silicon-on-Insulator (SOI) processes for operation above 200 degrees Celsius. The most recent of these is a CMOS autozeroed op amp with input offset voltage less than 50 microvolts and input offset current below 2 nanoamperes at 200 Degrees C (pictured above).

Current research involves the development of precision amplifiers, A/D converters and regulator circuits for operation at high temperatures.

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