The process took 2 days. I interviewed at ZiLOG (San Jose, CA) in Apr 2009
Interview
Was had a phone interview, just mostly talked about my background, resume and job description. Day of interveiw had a few technical questions, about op amps, microprossors, current mirros. Then second day of interview, they put you into a group scenerio type of debug situation where your problem solving and communications skills were accessed.