Patent ID: 8994459
Filing Date: 2015-03-31
Classification: H03L

Abstract:
1. An oscillator arrangement for generating a clock signal, the oscillator arrangement comprising a current controlled oscillator, a frequency to voltage converter, and an operational amplifier, wherein the oscillator arrangement is connectable to a supply voltage source, wherein the current controlled oscillator is adapted to generate a clock signal based on a control voltage signal, wherein the generated clock signal is supplied to the frequency to voltage converter, wherein the frequency to voltage converter is adapted to generate an output voltage signal based on the generated clock signal and based on a supply voltage signal, said output voltage signal being directly derived from the supply voltage signal, wherein the operational amplifier is adapted to receive the output voltage signal as a feedback signal at a first input terminal and to receive a reference voltage signal at a second input terminal, the reference voltage signal being directly derived from the supply voltage signal, such that variations in the supply voltage signal appear on the first input terminal and the second input terminal in the same amplitude and phase, wherein the current controlled oscillator is adapted to be controlled based on an output signal of the operational amplifier, wherein the output signal of the operational amplifier provides the control voltage signal to the current controlled oscillator in order to control the frequency of the clock signal.