Tool/software:
Hi
Our current system design uses three ADS7138 ICs, but during the low-temperature test, we found abnormal readings from one ADS7138 on one of the boards. The failure rate is approximately 1/30.
The IC functions normally if the temperature rises to -35 or -30 degrees and is restarted.
We compared the I2C waveforms and communication and found that the IC did not respond.
Have you encountered a similar issue before?
Frank
Hi Joel,
If this device is started at room temperature, then brought down to cold temperatures, are the failures still seen? Is the failure seen if the device is brought down to cold temperature, then restarted?
-> Frank: It will continue to function normally but will fail if restarted at -40°C. (please refer the table #5)
If so, at what temperature have you found that the device fails? How consistently are you able to recreate this failure given a device you have identified as a failure?
-> Frank: -40°C(Temp of chamber). 100% failure rate
Frank
