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Semiconductor device and ultrasonic diagnostic apparatus using the same
US9190992B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9190992-B2 |
| Application number | US-201113282882-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 27, 2011 |
| Priority date | Oct 28, 2010 |
| Publication date | Nov 17, 2015 |
| Grant date | Nov 17, 2015 |
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Abstract
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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.
First claim
Opening claim text (preview).
What is claimed is: 1. A semiconductor device comprising: a switch circuit capable of switching ON or switching OFF, bi-directionally; and a driving circuit for driving the switch circuit, wherein, the driving circuit is connected to a first power supply comprising a first power supply voltage which is equal to or higher than a maximum voltage of a signal applied to a first terminal comprising an input or output terminal of the switch circuit, and the driving circuit is conne…
Assignees
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Classifications
- H03K17/063Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Human Necessities · mapped topic
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Frequently asked questions
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- What does patent US9190992B2 cover?
- 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-…
- Who is the assignee on this patent?
- Hara Kenji, Sakano Junichi, Hitachi Power Semiconductor Device Ltd
- What technology area does this patent fall under?
- Primary CPC classification H03K17/063. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 17 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).