An on-chip analog capacitor. Metal interconnect structures are used to form the capacitor, and the interdigitated fingers of like polarity within the interconnect structure are connected above and below to one another by metal vias to form a wall of metal which increases total capacitance by taking advantage...http://www.google.de/patents/US6897505?utm_source=gb-gplus-sharePatent US6897505 - On-chip capacitor
