Invention Grant
- Patent Title: Semiconductor switch circuit, signal processing apparatus, and ultrasound diagnostic apparatus
- Patent Title (中): 半导体开关电路，信号处理装置和超声波诊断装置
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Application No.: US14461382Application Date: 2014-08-16
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Publication No.: US09531368B2Publication Date: 2016-12-27
- Inventor: Hironobu Honda , Fumiaki Yamashita , Junichi Aizawa
- Applicant: Hitachi Power Semiconductor Device, Ltd.
- Applicant Address: JP Hitachi-shi, Ibaraki
- Assignee: Hitachi Power Semiconductor Device, Ltd.
- Current Assignee: Hitachi Power Semiconductor Device, Ltd.
- Current Assignee Address: JP Hitachi-shi, Ibaraki
- Agency: Miles & Stockbridge P.C.
- Priority: JP2013-196862 20130924
- Main IPC: H03K17/10
- IPC: H03K17/10 ; A61B8/00 ; H03K17/687 ; H03K17/06 ; H03K17/082
Abstract:
A semiconductor switch circuit comprises: a first switch pair including two MOSFETs having gates connected one another and sources connected to one another, and a zener diode reversely connected between the gates and sources of the MOSFETs; a second switch pair including two MOSFETs having gates connected one another and sources connected to one another, and a zener diode reversely connected between the gates and sources of the MOSFETs; and a third switch pair comprising two MOSFETs having gates connected to one another and sources connected to one another. The first switch pair and the second switch pair are connected in series between two input/output terminals through a connecting node. The third switch pair is connected to the connecting node between the first switch pair and the second switch pair.
Public/Granted literature
- US20150087990A1 SEMICONDUCTOR SWITCH CIRCUIT, SIGNAL PROCESSING APPARATUS, AND ULTRASOUND DIAGNOSTIC APPARATUS Public/Granted day:2015-03-26
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