Title:
半導体装置、およびそれを用いた超音波診断装置
Document Type and Number:
Japanese Patent JP5485108
Kind Code:
B2
Abstract:
The present invention provides a semiconductor device of a bi-directional analog switch having a high linearity and a low electric power loss. An ultrasonic diagnostic apparatus having a high degree of detection accuracy, comprising the semiconductor device, is also provided. A semiconductor device of a bi-directional analog switch, comprising a switch circuit capable of switching ON or OFF bi-directionally, and built-in driving circuits for the switch circuit, wherein the driving circuit is connected to first and second power supplies, and a first power supply voltage is higher than a maximum voltage of a signal applied to an input/output terminal of the switch circuit, a second power supply voltage is lower than a minimum voltage of a signal applied to an input/output terminal of the switch circuit, and the driving circuit comprises a Zener diode and a p-type MOSFET connected in series between the first power supply and the switch circuit.
Inventors:
Kenshi Hara
Junichi Sakano
Junichi Sakano
Application Number:
JP2010241711A
Publication Date:
May 07, 2014
Filing Date:
October 28, 2010
Export Citation:
Assignee:
Hitachi Power Device Co., Ltd.
International Classes:
H03K17/687; A61B8/00; H01L29/786
Domestic Patent References:
| JP2006033723A | ||||
| JP2004531929A | ||||
| JP2010530616A | ||||
| JP2007116653A |
Foreign References:
| US6617906 |
Attorney, Agent or Firm:
Isono Dozo