Reducing Distortion In An Analog-To-Digital Converter

摘要

In one embodiment, an apparatus includes: a first voltage controlled oscillator (VCO) analog-to-digital converter (ADC) unit to receive a first portion of a differential analog signal and convert the first portion of the differential analog signal into a first digital value; a second VCO ADC unit to receive a second portion of the differential analog signal and convert the second portion of the differential analog signal into a second digital value; a combiner to form a combined digital signal from the first and second digital values; a decimation circuit to receive the combined digital signal and filter the combined digital signal into a filtered combined digital signal; and a cancellation circuit to receive the filtered combined digital signal and generate a distortion cancelled digital signal, based at least in part on a coefficient value.

主权项

1. An apparatus comprising:
a first voltage controlled oscillator (VCO) analog-to-digital converter (ADC) unit to receive a first analog signal and convert the first analog signal into a first digital signal; a decimation filter circuit to receive the first digital signal and filter the first digital signal into a filtered first digital signal; and a cancellation circuit feed forward coupled to receive the filtered first digital signal and generate an output first digital signal based at least in part on a coefficient value, to reduce third-order distortion.