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Hello,
I am going to use OPA2333-HT for high temperature application. For testing, I used off-the-shelf OPA2333AIDG4 instead. During the test, I observed unexpected pulse waveform at output of the OPA2333 at high temperature. It happened at around 215 deg. C in narrow temperature range, for example from 212 to 216 deg. C (Yes, it is much higher than the max operating temperature of OPA2333, 150 deg. C). Probably it is caused by internal offset correction. I hope the issue will not happen with OPA2333-HT.
Fig-1. Test circuit, x2 non-inverting amplifier
Fig-2. Output of the OPA2333. Unexpenced pulse is 85 KHz, 400 mVpp. Input is 0.7 V DC
Now, my question is:
Other than the package type, what is different between OPA2333 and OPA2333-HT? Is OPA2333-HT using selected die?
Thank you,
Yasumasa Fujisawa
