Patent ID: 7834710

Claim:
An oscillator circuit comprising: a first terminal; a second terminal; a resonator that is connected to the first terminal and the second terminal; a first capacitor that is connected to the first terminal and a ground line supplying the ground electric potential; a second capacitor that is connected to the second terminal and the ground line; m inverters, where m is an odd number equal to or larger than three, which are connected in series between the first terminal and the second terminal; a third capacitor that is connected to an input terminal of the n-th (where n is an integer satisfying 1≦n<m) inverter, counted from an input side of the inverter array and an output terminal of the (n+1)-th inverter; and a fourth capacitor connected to the p-th (where p is an integer other than n satisfying 1≦p<m) inverter, counted from the input side of the inverter array and an output terminal of the (p+1)-th inverter.