Detection device, gyrosensor, and electronic instrument
First Claim
Patent Images
1. A detection device comprising:
- a driver circuit which drives a vibrator to vibrate; and
a detection circuit which receives an output signal from the vibrator and detects a desired signal, the detection circuit including;
an amplifier circuit which amplifies the output signal from the 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 being provided in a preceding stage of the synchronous detection circuit.
2 Assignments
0 Petitions
Accused Products
Abstract
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.
25 Citations
16 Claims
-
1. A detection device comprising:
-
a driver circuit which drives a vibrator to vibrate; and a detection circuit which receives an output signal from the vibrator and detects a desired signal, the detection circuit including; an amplifier circuit which amplifies the output signal from the 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 being provided in a preceding stage of the synchronous detection circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
Specification