Title:
回路装置、発振器、電子機器及び移動体
Document Type and Number:
Japanese Patent JP7310193
Kind Code:
B2
Abstract:
Provided is a circuit device including: an oscillation circuit oscillating a vibrator, in which the oscillation circuit includes a variable capacitance circuit having a first variable capacitance element and a second variable capacitance element constituted by a first transistor and a second transistor, and a reference voltage supply circuit. The first reference voltage is supplied to a first gate of the first transistor and a capacitance control voltage is supplied to a first impurity region of the first transistor, the second reference voltage is supplied to a second gate of the second transistor and the capacitance control voltage is supplied to a second impurity region of the second transistor, and the capacitance control voltage is supplied to a first common impurity region of the first transistor and the second transistor.
Inventors:
Yosuke Itasaka
Application Number:
JP2019052437A
Publication Date:
July 19, 2023
Filing Date:
March 20, 2019
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
H03B5/30; H03B5/32
Domestic Patent References:
| JP2015104074A | ||||
| JP64061070A | ||||
| JP2008245259A | ||||
| JP2012064915A | ||||
| JP2009059891A | ||||
| JP2003297940A | ||||
| JP10051238A | ||||
| JP8046427A |
Foreign References:
| US6794707 | ||||
| US20170330977 |
Attorney, Agent or Firm:
Satoshi Nakai
Hiroki Matsuoka
Masayuki Imamura
Hiroki Matsuoka
Masayuki Imamura