Patent ID: 6956517

Claim:
An analog to digital conversion system having an analog input and a digital output, said system comprising: a signal analog to digital conversion (ADC) component having an analog signal input coupled to said analog input of said system and a digital signal output coupled to said digital output of said system; a signal cancellation digital to analog conversion (DAC) component having a digital signal input and an analog signal output, said analog signal output being coupled between said input of said analog to digital conversion system and said analog input of said signal ADC component; a first digital feedback circuitry signal path having a digital signal input coupled to said digital signal output of said signal ADC component, and having a digital signal output; and at least one additional digital feedback circuitry signal path having a digital signal input coupled to said digital signal output of said signal ADC component, and having a digital signal output provided for combination with said digital signal output of said first digital feedback circuitry signal path to produce a combined digital output signal; wherein said signal cancellation DAC is configured to receive said combined digital output signal and to provide an analog cancellation signal based on said combined digital output signal for combination with said system analog input signal to produce a modified analog input signal.