We're seeing some issues with our test sample breaking down as though it was seeing higher than expected voltage being applied. Currently I have the amplifier disabled and VPEAK set to 12mV so we should not be seeing high voltage. However, when I try to probe the signals I'm seeing things that don't make sense to me. First off I see no difference when I enable/disable the attenuation. Second, I'm seeing 1.2V on channel 8. I'm not sure why this is but our test samples must not experience more than 50mV or they start to become damaged. Can anyone explain why I'm seeing 1.2V excitation voltage and how to fix this?
My switching sequence is as follows (see attached also):
Here's my circuit:
And here's a capture of what I'm seeing