CIRCUIT FOR PHYSICAL QUANTITY DETECTION DEVICE, PHYSICAL QUANTITY DETECTION DEVICE, ELECTRONIC APPARATUS, AND MOVING OBJECT

摘要

A circuit for a physical quantity detection device includes a drive unit that generates a drive signal that causes an vibrator to vibrate, a detection unit that detects a detection signal outputted from the vibrator based on the drive signal, a passive filter which has a filter characteristic in which a cutoff frequency is lower than a detuning frequency and a cutoff frequency band contains a frequency band higher than the cutoff frequency and to which a signal from the detection unit is inputted, and an amplification unit that amplifies a signal from the passive filter.

主权项

1. A circuit for a physical quantity detection device, the circuit comprising:
a drive unit that generates a drive signal that causes an vibrator to vibrate; a detection unit that detects a detection signal outputted from the vibrator based on the drive signal; a passive filter which has a filter characteristic in which a cutoff frequency is lower than a detuning frequency and a cutoff frequency band contains a frequency band higher than the cutoff frequency and to which a signal from the detection unit is inputted; and an amplification unit that amplifies a signal from the passive filter.