Patent ID: 6181215
Filing Date: 2001-01-30
Classification: H03B,H03J,H03K,H03L

Abstract:
An oscillator circuit, comprising:a first circuit node;a second circuit node;a parallel circuit including a quartz resonator, a first inverter, and a first resistor element connected in parallel between said first and second circuit nodes;a first capacitor circuit connected between said first circuit node and a reference potential;a second capacitor circuit connected between said second circuit node and the reference potential;said first capacitor circuit having at least two capacitors each with a first terminal connected to the reference potential and a second terminal;switching elements respectively connected between each of said second terminals of said at least two capacitors and said first circuit node; anda synchronizing circuit connected to said switching elements, said synchronizing circuit generating a synchronizing signal for switching at least one of said switching elements in dependence on a potential at said first circuit node.