Elevated Temp. effect on ADIS16255.

Hello Chandra,

It is great to see you posting on the Engineer Zone!  I hope that you are doing well!  There are a couple of reasons for the change in bias.  First, the gyroscope core structure and supporting electronics will begin to experience non-linear behaviors in the bias/temperature relationship, once the temperature exceeds +85C. Second, the calibration only extends to +85C, so the non-linear bias changes will not be corrected.   The ADIS16265 provides service to +105C and may provide incremental improvements in these behaviors.  We really don't have a go/no-go temperture that we can offer, outside of the operating temperature in the datasheet. Operating at +150C/175C is not surprising, but we cannot assure that across a population of parts. I hope that helps!

Best regards, NevadaMark

Dear NevadaMark,

Thanks for sharing your thoughts. This information is really helpful as it explains non-linear bias at high temp. However, I have couple of questions on the strange behavior of gyro I observed at high temp. Since It is difficult to describe this phenomenon by word, I would appreciate if you can send me your email address and I would be happy to discuss these results.

Regards,

Chandra

Hello Chandra,

I will send it to you in a private message.  So, you want us to comment on a behavior that you are experiencing, while subjecting the device to condtionns that are well outside of its ratings? I will do the best I can, but we may be limited in our ability to support this.

Best, NevadaMark

For the purpose of closing this discussion, I wanted to mention that Chandra and I had a great conversation about his research on high-temperature operation for the ADIS16255 (see ADIS16265 for the new version). We concluded this conversation with the message that, determining the root cause, with a high degree of probability, would likely be a time-consuming, costly exercise. Since the temperature was much higher than the rating of the device and this is outside of our current market focus, we are not able to support this investigation.  However, I wanted to mention that we are always interested in learning more about high-temperature applications.  For anyone that has application-specific questions like this, for an industry-driven program, we would be happy to discuss this with you in a private conversation, which the Engineer Zone supports. We look forward to hearing from you.  Special thanks to Chandra for his investment in studying the ADIS16255!