Integrated circuit having passive circuit elements

• US 5,481,131 A
• Filed: 09/29/1994
• Issued: 01/02/1996
• Est. Priority Date: 09/03/1993
• Status: Expired due to Term

• Current Assignee: Freescale Semiconductor, Inc. (NXP Semiconductors NV)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Patterson, Howard W., Staudinger, Joseph, Seely, Warren L.
• Primary Examiner(s): Crane, Sara W.
• Assistant Examiner(s): BOWERS, COURTNEY
• Application Number:
  US08/287,336
• Time in Patent Office: 460 Days
• Field of Search: 257/488, 257/531, 257/532, 257/533, 257/534, 257/535, 257/536, 257/379
• US Class Current: 257/531
• CPC Class Codes: H01L 27/08 including only semiconductor components of a single kind

Abstract

An integrated circuit is formed from a first layer of conductive material (30) which is separated from a second layer of conductive material (39) by a layer of dielectric material (36). The first layer of conductive material (30) is patterned to form a first plate (32, 59) of a capacitor (22, 50, 62, 72). An electrical interconnect (33, 63) is formed within the first plate (32, 59), respectively. A via (37) is formed in the layer of dielectric material (36). A second layer of conductive material (39) is patterned to form a second plate (42, 56, 66, 76) of the capacitor (22, 50, 62, 72) and a planar spiral inductor (21, 51, 61, 71). The planar spiral inductor (21, 51, 61, 71) is surrounded by the second plate (42, 56, 66, 76) of the capacitor (22, 50, 62, 72).

Claims

1. An integrated circuit having passive circuit elements capable of storing energy, comprising:

a first conductive material having a first portion of a first passive circuit element that is capable of storing energy and a first portion of a second passive circuit element that is capable of storing energy;

a second conductive material, the second conductive material comprising a first passive circuit element region having a second portion of the first passive circuit element that is capable of storing energy and a second passive circuit element region having a second portion of the second passive circuit element that is capable of storing energy, the first passive circuit element region substantially surrounding the second passive circuit element region and the first passive circuit element that is capable of storing energy being of a different type than the second passive circuit element that is capable of storing energy; and

a dielectric material formed between the first conductive material and the second conductive material, wherein a portion of the first conductive material is coupled to a portion of the second conductive material.

2. An integrated circuit as claimed in claim 1, wherein the second passive circuit element region has a rectangular spiral shape.

3. An integrated circuit as claimed in claim 1, wherein the second passive circuit element region has a circular spiral shape.

4. An integrated circuit as claimed in claim 1, wherein the second passive circuit element region has an octagonal spiral shape.

5. An integrated circuit as claimed in claim 1, wherein the second portion of the second passive circuit element of the second conductive material is electrically coupled to the first portion of the second passive circuit element of the first conductive material.

6. An integrated circuit as claimed in claim 1, wherein a portion of the second passive circuit element region is electrically coupled to a portion of the first passive circuit element region.

7. An integrated circuit as claimed in claim 5, wherein the second portion of the second passive circuit element of the second conductive material is electrically coupled to the first portion of the first passive circuit element of the first conductive material.

8. An integrated circuit as claimed in claim 1, wherein the first passive circuit element region of the second conductive material is electrically grounded.