What type of electronic hardware is best suited for high temperatures, roughly 200°C? From what I've discovered, most FPGAs, microprocessors, and DSPs have an operating temperature of 70°C or below. So what type of digital or analog circuitry should be selected for operations at 150°C or higher?
Electronic – What type of electronic hardware is best suited for high temperature applications
aviation-electronicspcbtemperature
Related Solutions
Conductivity is the obvious choice - running the electronics with a 1.5V battery and connecting the electrodes through a high-valued resistor should stop anything bad happening (though don't take that as a guarantee ;)
For such a sensor network I would absolutely consider using Dallas 1-wire components for great flexibility and reasonable price. It is well supported in Linux via owfs.
At www.hobby-boards.com there is a small T3-R1-A ready made board which you just connect with cat5/RJ45 priced at 18USD. According to the documentation it uses the DS18S20 sensor like already mentioned by BG100.
Best Answer
There are various companies that have processes for higher temperature devices. They are by their nature much simpler that CMOS in Si. You might be bale tt buy individual transistors.
for example Microsemi has MOSFET in SiC that operate at 150 C, Diodes in SiC at 175 C.
Look also for GaN as a possible material.
MACON has GaN on SiC amplifiers that operate to 200 C (link to pdf).
TI has a whole section dedicated to HT parts (up to 210 C) here. here is a derating curve for one part from them: