公开(公告)号：US20130270674A1

公开(公告)日：2013-10-17

申请号：US13918826

申请日：2013-06-14

Applicant: Broadcom Corporation

Inventor： Hooman DARABI ,  Qiang LI ,  Bo Zhang

IPC: H01L49/02

CPC classification number: H01L28/40 ,  H01L23/5223 ,  H01L27/0805 ,  H01L28/87 ,  H01L28/91 ,  H01L29/93 ,  H01L29/94 ,  H01L2924/0002 ,  H01L2924/00

Abstract: At least a first capacitor is formed on a substrate and connected to a first differential node of a differential circuit, and the first capacitor may be variable in capacitance. A second capacitor is formed on the substrate and connected to a second differential node of the differential circuit, and the second capacitor also may be variable. A third capacitor is connected between the first differential node and the second differential node, and is formed at least partially above the first capacitor. In this way, a size of the first capacitor and/or the second capacitor may be reduced on the substrate, and capacitances of the first and/or second capacitor(s) may be adjusted in response to a variable characteristic of one or more circuit components of the differential circuit.

Abstract translation: 至少第一电容器形成在衬底上并连接到差分电路的第一差分节点，并且第一电容器可以是可变电容的。 第二电容器形成在衬底上并连接到差分电路的第二差分节点，并且第二电容器也可以是可变的。 第三电容器连接在第一差分节点和第二差分节点之间，并且至少部分地形成在第一电容器的上方。 以这种方式，可以在衬底上减小第一电容器和/或第二电容器的尺寸，并且可以响应于一个或多个电路的可变特性来调整第一和/或第二电容器的电容 差分电路的组件。