Patent ID: 6271735
Filing Date: 2001-08-07
Classification: H03K,H03L

Abstract:
An oscillator for providing a periodic output signal at an output thereof responsive to an applied periodic charging and discharging input signal, comprising:a comparator having an inverting and non-inverting input and an output, said output being said output of said oscillator, said non-inverting input receiving the applied input signal;a first transistor having a control electrode, first and second electrodes, said first electrode being coupled to the inverting input of said comparator, said second electrode being coupled to a terminal at which is supplied a ground reference potential;a current source for supplying a current at an output thereof, said output being coupled to said first electrode of said first transistor;a second transistor having a control electrode, a first electrode coupled to said inverting input of said comparator, and a second electrode connected to its control electrode;a third transistor having a control electrode coupled to said output of said comparator, a first electrode coupled to said terminal and said second electrode coupled to said second electrode of said second transistor; anda voltage source for providing a reference voltage to said control electrode of said first transistor.