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This paper describes a wideband high-linearity Â¿Â¿ ADC. It uses noise coupling combined with time interleaving. Two versions of a two-channel time-interleaved noise-coupled Â¿Â¿ ADC were realized in a 0.18-Â¿m CMOS technology. Noise coupling between the channels increases the effective order of the noise-shaping loops, provides dithering, and prevents tone generation in all loops. Time interleaving enhances the effects of noise coupling. Using a 1.5 V supply, the device achieved excellent linearity (SFDR>100 dB, THD=-98 dB) and an SNDR of 79 dB in a 4.2 MHz signal band.