love_analog wrote on Apr 22nd, 2010, 4:37pm:You probably got your answer by now. I have worked with some BCD foundries before and their pad leakage was way higher than 20pA - more like 1uA or so.
Need a custom ESD cell with low junction area. Would be interested in what you find out.
Thanks for the reply, sorry for my lack of attention. So far we've decided that the leakage is something less than 1nA, and we have board leakage issues. We're waiting for a board turn (putting ground rings around the inputs).
I'm on xfab xb06. My esd diodes are about 40% larger than a pad.
Steve