Patent ID: 8766731
Filing Date: 2014-07-01
Classification: H03B,H03K

Abstract:
1. Oscillator circuit comprising a current source for providing an reference current, a first integrator circuit comprising a first integrator capacitor and a first integrator output, a first discharge circuit for discharging said first integrator capacitor once per cycle of said oscillator circuit, and an oscillator output for providing an output signal, wherein said oscillator circuit further comprises a second integrator circuit comprising a second integrator capacitor and a second integrator output, a second discharge circuit for discharging said second integrator capacitor once per cycle of said oscillator circuit, a comparator for comparing said first integrator output and said second integrated output signals respectively to a reference voltage and thereby providing said output signal at said oscillator output, and wherein said oscillator circuit is arranged for allowing said reference current to be integrated by said first and second integrator circuit respectively in an alternating manner, and for providing a first integrated output signal of said first integrator circuit and a second integrated output signal of said second integrator circuit subsequently to said comparator in said alternating manner, such that when said reference current is integrated by said first integrator circuit said first integrated output signal is provided to said comparator and that when said reference current is integrated by said second integrator circuit said second integrator output signal is provided to said comparator respectively.