Title:
SEMICONDUCTOR DEVICE AND SENSOR SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/239752
Kind Code:
A1
Abstract:
Provided are a semiconductor device and a sensor system capable of achieving an improvement in noise immunity. An output circuit 106a in the semiconductor device includes: input terminals 207n, 207p and an output terminal 208; an output amplifier 201 connecting the input terminals 207n, 207p to the output terminal 208; a feedback element 203 returning the output terminal 208 to the input terminal 207n; a switching transistor 204; and a resistance element 206. The drain of the switching transistor 204 is connected to the input terminal 207n. The resistance element 206 is provided between the back gate of the switching transistor 204 and a power supply Vdd, and also has an impedance, of at least a prescribed value, for suppressing noise of a prescribed frequency generated at the input terminal 207n.
Inventors:
NAKAGAWA TATSUO (JP)
SATOH AKEO (JP)
KOTABE AKIRA (JP)
MATSUMOTO MASAHIRO (JP)
SATOH AKEO (JP)
KOTABE AKIRA (JP)
MATSUMOTO MASAHIRO (JP)
Application Number:
PCT/JP2019/018640
Publication Date:
December 19, 2019
Filing Date:
May 09, 2019
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
H03F1/34; H03F3/345
Domestic Patent References:
| WO2011104800A1 | 2011-09-01 |
Foreign References:
| JP2008054075A | 2008-03-06 | |||
| JP2004500710A | 2004-01-08 | |||
| JP2016032295A | 2016-03-07 | |||
| JPS61189718A | 1986-08-23 | |||
| JP2015119304A | 2015-06-25 | |||
| JP2005204297A | 2005-07-28 |
Attorney, Agent or Firm:
TSUTSUI & ASSOCIATES (JP)
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