Patent ID: 7856219

Claim:
An integrated isolator, comprising: first and second integrated circuit substrates; each of said first and second substrates having contained on the surface thereof a lower transformer coil with an associated input; each said lower transformer coil on said first and second substrates having a layer of dielectric material disposed thereover and each said lower transformer coil associated with one of a first transformer and a second transformer; and a top conductive coupling layer disposed over each of said respective dielectric layers on said first and second substrates to couple energy from one of said inputs of said respective lower transformer coils on said first and second substrates to the other of said inputs, wherein said top conductive coupling layer comprises: a respective upper transformer coil for each of said first and second substrates disposed over said respective lower transformer coil and separated therefrom by said associated dielectric layer, each of said upper transformer coils having an input; each of the upper transformer coils associated with one of the first transformer and the second transformer; and said inputs of each of said upper transformer coils on said first and second substrates, respectively, conductively connected together with a conductive medium.