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Patent Searching and Data


Title:
SEMICONDUCTOR DEVICE, OPERATIONAL AMPLIFIER AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/030091
Kind Code:
A1
Abstract:
The objective of the present invention is to increase the output impedance of a semiconductor device. This semiconductor device is provided with: a first transistor (Tr) element of a first conduction type, interposed in a first line connecting a high potential side power supply to a low potential side power supply; a second Tr element of the first conduction type, interposed in a second line connecting the high potential side power supply to the low potential side power supply; a third Tr element of a second conduction type, interposed in the first line and forming one of a differential pair; a fourth Tr element of the second conduction type, interposed in the second line and forming the other of the differential pair; a first output portion connected to the first line between the first Tr element and the third Tr element; a second output portion connected to the second line between the second Tr element and the fourth Tr element; a first resistor connecting the control terminal of the first Tr element to the first output portion; a second resistor connecting the control terminal of the second Tr element to the second output portion; and a third resistor connecting the control terminal of the first Tr element to the control terminal of the second Tr element.

Inventors:
IDE DAISUKE (JP)
KATAKURA MASAYUKI (JP)
TAGAMI HIROYASU (JP)
ARIMA MARI (JP)
Application Number:
PCT/JP2016/073759
Publication Date:
February 23, 2017
Filing Date:
August 12, 2016
Export Citation:
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Assignee:
SONY CORP (JP)
International Classes:
H03F3/45
Foreign References:
JPH09147573A1997-06-06
JPH11506580A1999-06-08
JPS5073365U1975-06-27
JP2009049585A2009-03-05
Attorney, Agent or Firm:
MATSUO Kenichiro (JP)
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