LMP7721: Op Amp Eval Board Cleaning for Femptoamp Bias Currents: the link is not working.

Hi Richard,

Hmm... The video seems to have vanished w/o a trace. We usually had a backups on YouTube from back then - but that seems to be gone, too.

Guess I'm too ugly now... :^)

Looks like you got the link from the EDN Femtoamp article, so I don't need to re-hash part 3 cleaning section.

 https://www.edn.com/design-femtoampere-circuits-with-low-leakage-part-3-low-current-design-techniques/

Main thing is to flush with IPA (isopropyl...not the beer), scrub with a brush (I used an acid brush cut short - as seen in figure 7 - which is actually a frame grab from the video), blow dry then rinse with distilled water...then repeat a second time. Then bake at >50°C for a few minutes to drive the last of the moisture out.

I'll try to see where the video went...but you are not missing much.. ;^)

Only if consumed before cleaning the board... ;^)