DRIVE APPARATUS, PHYSICAL QUANTITY DETECTION APPARATUS, AND ELECTRONIC APPARATUS

摘要

A driver apparatus includes a vibrator and a drive circuit configured to input a drive signal to the vibrator to vibrate the vibrator. The drive circuit includes an output amplifier configured to output the drive signal to the vibrator based on a monitor signal, a power supply unit configured to supply a power supply voltage, and a power supply voltage controller configured to control the power supply voltage and to supply the controlled power supply voltage to the output amplifies. This driver apparatus can increase amplitude of the vibration of the vibrator, and can increase detection sensitivity to a physical quantity detection apparatus including the driver apparatus.

主权项

1. A driver apparatus comprising:
a vibrator configured to vibrate in response to a drive signal input thereto, and to output a monitor signal in accordance with a vibration thereof; and a drive circuit configured to input the drive signal to the vibrator to vibrate the vibrator, wherein the drive circuit includes:
an input amplifier configured to amplify the monitor signal and output the amplified monitor signal;an AGC circuit unit has a gain automatically adjusted based on the signal output from the input amplifier;an output amplifier configured to receive the drive signal and output the drive signal to the vibrator;a power supply unit configured to supply a power supply voltage; anda power supply voltage controller configured to boost the power supply voltage, and to supply the boosted power supply voltage to the output amplifier.