Monolithically integrated circuit of high dielectric strength for electrically coupling isolated circuits

US4339668A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Ruediger Mueller · Munich, DE
• Michael Pomper · Schliersee, DE
• Ludwig Leipold · Munich, DE

Key dates

• Filing date: Sep 14, 1979
• Grant date: Jul 13, 1982
• Expiry date: Sep 14, 1999

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S331/03
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A system is disclosed for coupling electrically isolated circuits in a monolithic integrated circuit. A signal coupler is integrated on a chip together with a primary circuit and a secondary circuit which is to be coupled to the primary circuit. The signal coupler comprises an integrated coupling capacitor which consists of a coplanar conductor path arrangement embedded into a passivation layer, the passivation layer being applied to an insulating substrate, preferably sapphire.