Patent ID: 8791733

Claim:
A frequency synthesizer, comprising: a phase comparator having first and second input nodes, wherein the first input node is configured to receive a reference signal having a reference frequency; a channel control block having an input node and an output node, wherein the input node is configured to receive a channel word and wherein the output node is coupled to the second input node of the phase comparator; a local oscillator (LO) having an output node to provide an LO signal having an LO frequency based on the reference frequency and the channel word, wherein a feedback back couples the LO output node to the second input node of the phase comparator through the channel control block; and a non-linear error correction element operably coupled on a coupling path extending between the phase comparator and the LO output node, wherein the non-linear error correction element is configured to adjust a phase lock control signal output from the phase comparator to form an error corrected phase lock control signal for the local oscillator (LO) along the coupling path based on a non-linearly scaled detected quantization noise by the channel control block.