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Patent Searching and Data


Title:
OSCILLATION CIRCUIT
Document Type and Number:
Japanese Patent JP2013232877
Kind Code:
A
Abstract:

To provide an oscillation circuit using a comparison circuit which implements a simpler configuration capable of suppressing a variation in oscillation frequency due to a variation in delay time in the comparison circuit.

An oscillation circuit 1 includes a switching control circuit 8 for selecting either of a first capacitor C1 and a second capacitor C2 to be charged by a constant current source 15 and the other to be discharged on the basis of signals output from a first comparison circuit 11 and a second comparison circuit 13. A correction section 4 generates correction data used to correct a first threshold and a second threshold set by a threshold setting circuit 20 on the basis of a charge voltage of at least either of the first capacitor C1 and the second capacitor C2 at a predetermined timing based on the switching timing of the switching control circuit 8.


Inventors:
KANEKO YASUTAKA
Application Number:
JP2012000234447
Publication Date:
November 14, 2013
Filing Date:
October 24, 2012
Export Citation:
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Assignee:
DENSO CORP
International Classes:
H03K3/0231; H03K4/06
Domestic Patent References:
JP2013038744A2013-02-21
JP2008306356A2008-12-18
JP2013038744A2013-02-21
JP2008306356A2008-12-18
Foreign References:
US20100164638A12010-07-01
US20100164638A12010-07-01
Attorney, Agent or Firm:
田下 明人