公开(公告)号：US10856073B2

公开(公告)日：2020-12-01

申请号：US16708854

申请日：2019-12-10

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Rupesh Khare ,  Simon Foster

IPC: H03G3/00 ,  H04R3/00 ,  H03F3/185 ,  H04R5/04

Abstract: This application relates to switch arrangements, in particular switch arrangements suitable for switchable connecting nodes of audio driving circuitry (100) that may, in use, experience a signal swing depending on an output audio driving signal (VD). A switch arrangement (300) comprises first and second transistors (301 and 302) of the same polarity type connected in series between the first and second nodes, with a third transistor (303) connected between a defined voltage (VS) and an intermediate node (N3) between the first and second transistors. The first transistor (301) has a drain connection to the first node (N1) and a source connection to the intermediate node (N3). The second transistor (302) has a drain connection to the second node (N2) and a source connection to the intermediate node (N3). The third transistor (303) has a source connection to the defined voltage (VS) and a drain connection to the intermediate node (N3) and regulates the voltage at the intermediate node when the switch arrangement is in an off state.