Patent ID: 8198947

Claim:
An oscillator circuit, comprising: a charging block with a first terminal for feeding a first charging current, to which terminal a first capacitor and a series circuit of a first and a second switch are connected, and with a second terminal for feeding a second charging current, to which terminal a second capacitor and a series circuit of a third and a fourth switch are connected; a comparison circuit with a first comparator which is configured to compare a first voltage at the first terminal to a reference voltage and whose output is connected to a control terminal of the third switch, and with a second comparator which is configured to compare a second voltage at the second terminal to the reference voltage and whose output is connected to a control terminal of the first switch; and a flipflop which is coupled on the input side to the outputs of the first and the second comparator, and on the output side, to control terminals of the second and the fourth switch, as well as to an oscillator output.