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Continuous-time ∆Σ ADCs have received much attention in the last couple of years for applications that require signal bandwidths of several MHz. It has been well documented that continuous-time ADCs are favored over switched-capacitor ADCs due to their lower power requirements [1]. Other advantages include better noise immunity due to their inherent anti-aliasing properties, which are especially advantageous in RF receivers [2]. Also, the trend towards very deep sub-micron processes dictates the use of lower power supply voltages. As a consequence, switchedcapacitor based circuits require boot-strapping techniques to drive the switches in order to extend the dynamic range and sampling rates of the converter. Continuous-time ADCs avoid such problems and can attain much higher signal bandwidths. Data_in Reset AV SS AV SS AV SS CLK D D D D Symmetric crossover CLK Data_in Chopper stabilization switched on Chopper stabilization switched off Dynamic Range = 102dB Peak SNDR = 95dB

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