Patent ID: 7113117

Claim:
A method of processing an input signal, said method comprising the steps of: sampling said input signal on capacitive circuits coupled in parallel, each of said capacitive circuits being charged during a respective first overlapping time interval of different duration; sampling a noise associated with said input signal on each of said capacitive circuits during the respective first overlapping time interval of different duration; the different durations providing different noise levels on each of said capacitive circuits; holding input signal levels on each of said capacitive circuits as held signals and discharging each of said capacitive circuits during a respective second overlapping time interval; holding said noise levels on each of said capacitive circuits as held noise levels and discharging each of said capacitive circuits during the respective second overlapping time interval; and summing said held signals and said held noise levels by said discharging step to an output node as a summed signal and noise; whereby using overlapping time intervals of different durations in said sampling steps reduces a correlation of said noise levels relative to using time intervals of the same duration.