A system and apparatus for reducing the effects of circuit mismatch in
analog-to-digital converters is disclosed. In one form, an
analog-to-digital converter (ADC) includes a switching network operable
to couple an analog input received by a sample and hold module to a
folding amplifier operable to process the analog input. The ADC further
includes an averaging resistive network coupled to the folding amplifier
and operable to provide an output representative of a portion of the
analog input received by the folding amplifier to produce a digital
representation of the analog input.