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1. (WO2018159033) OSCILLATION CIRCUIT, TIMING CIRCUIT, ELECTRONIC DEVICE AND CONTROL METHOD FOR OSCILLATION CIRCUIT

Pub. No.:    WO/2018/159033    International Application No.:    PCT/JP2017/042354
Publication Date: Sat Sep 08 01:59:59 CEST 2018 International Filing Date: Tue Nov 28 00:59:59 CET 2017
IPC: H03B 5/20
H03B 5/04
Applicants: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
ソニーセミコンダクタソリューションズ株式会社
Inventors: NAKAHARA, Hironori
中原 宏徳
SHOJI, Norio
小路 法男
Title: OSCILLATION CIRCUIT, TIMING CIRCUIT, ELECTRONIC DEVICE AND CONTROL METHOD FOR OSCILLATION CIRCUIT
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.