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Title:
OSCILLATION CIRCUIT, TIMING CIRCUIT, ELECTRONIC DEVICE AND CONTROL METHOD FOR OSCILLATION CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2018/159033
Kind Code:
A1
Abstract:
In an oscillation circuit that uses a resistor and a capacitor, a periodic signal the period of which is independent of temperature is generated. A temperature compensation circuit generates two temperature compensation voltages the voltage ratio between which is dependent on temperature. An inversion element inverts a feedback signal using one of the two temperature compensation voltages and outputs the inverted feedback signal as an inverted signal. A delay circuit delays the inverted signal over a delay time corresponding both to a time constant having a temperature characteristic opposite to that of the voltage ratio and to the voltage ratio and outputs the delayed inverted signal as a delayed signal. An output unit outputs the delayed signal as a periodic signal using the other of the two temperature compensation voltages, and feeds back the delayed signal as the feedback signal.

Inventors:
NAKAHARA, Hironori (4-14-1 Asahi-cho Atsugi-sh, Kanagawa 14, 〒2430014, JP)
SHOJI, Norio (4-14-1 Asahi-cho Atsugi-sh, Kanagawa 14, 〒2430014, JP)
Application Number:
JP2017/042354
Publication Date:
September 07, 2018
Filing Date:
November 27, 2017
Export Citation:
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Assignee:
SONY SEMICONDUCTOR SOLUTIONS CORPORATION (4-14-1 Asahi-cho, Atsugi-shi Kanagawa, 14, 〒2430014, JP)
International Classes:
H03B5/20; H03B5/04
Foreign References:
JP2002033644A2002-01-31
JP2016133470A2016-07-25
Attorney, Agent or Firm:
MARUSHIMA, Toshikazu (Craft Intellectual Property, Keio Shinjuku 3-chome 2nd Bldg.5F, 3-3-2 Shinjuku, Shinjuku-k, Tokyo 22, 〒1600022, JP)
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