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A 600MS/s 30mW 0.13µm CMOS ADC Array Achieving over 60dB SFDR with Adaptive Digital Equalization

A 600MS/s 30mW 0.13µm CMOS ADC Array Achieving over 60dB SFDR with Adaptive Digital Equalization. Time-interleaved ADC array High sampling rate, low power Channel mismatch errors Offset, gain, linearity and skew Approaches Correlation, statistics, and Chopping

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A 600MS/s 30mW 0.13µm CMOS ADC Array Achieving over 60dB SFDR with Adaptive Digital Equalization

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  1. A 600MS/s 30mW 0.13µm CMOS ADC Array Achieving over 60dB SFDR with Adaptive Digital Equalization • Time-interleaved ADC array • High sampling rate, low power • Channel mismatch errors • Offset, gain, linearity and skew • Approaches • Correlation, statistics, and Chopping • Slow convergence, involved analog path, ad-hoc solutions • Equalization • Fast convergence, digital post-processing, systematic solution

  2. Equalization-Based Conversion Architecture Channel mismatch errors automatically eliminated w/ equalization !

  3. Performance Summary fs = 600 MS/s, Ain = 0.9 FS

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