Drive control device for oscillator, drive control method for ocillator, and manufacturing method for oscillator

Abstract

To drive an oscillator always at a stable and constant oscillation even if frequency and amplitude of a power supply voltage differ depending on a delivery destination of the oscillator, an oscillator drive control device (), which generates a predetermined switching pattern by operating a switching element, and supplies an oscillation generation unit () of the oscillator with drive electric power for generating predetermined oscillation frequency and amplitude according to the switching pattern, includes: a voltage detection circuit () for detecting a power supply voltage unique to a delivery destination of the oscillator; a memory circuit () storing, in advance, a basic switching pattern adapted to an arbitrarily set reference voltage, and used for driving the oscillation generation unit () at proper oscillation frequency and amplitude; and an arithmetic processing circuit () for calculating a ratio of the detected voltage unique to the delivery destination detected by the voltage detection circuit () to the reference voltage, and calculating, based on the ratio, a switching pattern substantially the same as the basic switching pattern under an environment of the power supply voltage unique to the delivery destination.