Inductance with a midpoint
An inductance with a midpoint formed in a monolithic circuit, comprising a first conductive spiral integrally formed in a first conductive level, a second conductive spiral integrally formed in a second conductive level, and a via of spiral interconnection at the position of the inductance midpoint.
1. An inductance with a midpoint formed in a monolithic circuit, comprising:
a first conductive spiral integrally formed in a first conductive level;
a second conductive spiral integrally formed in a second conductive level;
a via of spiral interconnection at the position of the inductance midpoint; and
a track of contact recovery with the outside of the structure, implemented in a third conductive level, said track being connected to said midpoint.
2. The inductance of claim 1 , wherein the two spirals are not superposed.
3. The inductance of claim 1 , wherein the two spirals are, in a plane, symmetrical with respect to a line crossing the midpoint and the center of the structure.
4. The inductance of claim 1 , wherein at each half turn, each spiral undergoes a transition generating an insulated overlapping between the spirals.
5. The inductance of claim 4 , wherein the transitions are aligned with the midpoint.
6. The inductance of claim 1 , wherein the winding is generally circular.
7. The inductance of claim 1 , wherein the winding is formed of rectilinear sections placed end to end.
8. A monolithic circuit comprising the inductance of claims 1 .
9. A monolithic inductor, comprising;
a first conductive spiral formed in a first conductive level;
a second conductive spiral formed in a second conductive level;
a via connecting the first conductive spiral and the second conductive spiral; and
a track connected to the via;
wherein at each half turn, each spiral undergoes a transition generating an insulated overlapping between the spirals.
10. The monolithic inductor of claim 9 , wherein the two spirals are not superposed.
11. The monolithic inductor of claim 9 , wherein the two spirals are, in a plane, symmetrical with respect to a line crossing the midpoint and the center of the structure.
12. The monolithic inductor of claim 9 , wherein the transitions are aligned with the via.
13. The monolithic inductor of claim 9 , wherein the winding is generally circular.
14. The monolithic inductor of claim 9 , wherein the winding is formed of rectilinear sections.
15. The monolithic inductor comprising the inductance of claim 9 .