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Patent Searching and Data


Title:
OSCILLATOR CIRCUIT
Document Type and Number:
Japanese Patent JP2017143416
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an oscillator circuit capable of more appropriately suppressing noise resulting from a clock signal.SOLUTION: An oscillator circuit 3 includes: a periodic signal generation part (a triangular wave generation part 33) for generating a cyclic periodic signal in which a frequency varies; a clock generation part for generating a clock signal of a frequency corresponding to the periodic signal. The clock generation part includes: a ring oscillator part 31 having an odd-number of inverters IV1-IV3 connected in a ring shape and capacitors C31-C33 connected with each of output ends of the inverters; and a variable current supply part 32 for supplying an electric current corresponding to the periodic signal to the inverters.SELECTED DRAWING: Figure 3

Inventors:
TAKENAKA SHOJI
Application Number:
JP2016023559A
Publication Date:
August 17, 2017
Filing Date:
February 10, 2016
Export Citation:
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Assignee:
ROHM CO LTD
International Classes:
H03K4/06; H02M3/155; H03K3/03; H03K5/156
Domestic Patent References:
JP2004207846A2004-07-22
JP2007208705A2007-08-16
JPH10200396A1998-07-31
JP2006352932A2006-12-28
JP2014143235A2014-08-07
JP2014236471A2014-12-15
Foreign References:
US20080130712A12008-06-05
US4454483A1984-06-12
Attorney, Agent or Firm:
特許業務法人 佐野特許事務所