| 摘要 |
A detection device includes a driver circuit and a detection circuit. The detection circuit includes an amplifier circuit which amplifies an output signal from a vibrator, a sensitivity adjustment circuit which performs sensitivity adjustment by variably controlling a gain, and a synchronous detection circuit which performs synchronous detection based on a reference signal. The sensitivity adjustment circuit is provided in the preceding stage of the synchronous detection circuit. The sensitivity adjustment circuit operates as a programmable-gain amplifier and a high-pass filter.
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