A 12b 50MS/s fully differential zero-crossing-based ADC without CMFB

@article{Brooks2009A15,
  title={A 12b 50MS/s fully differential zero-crossing-based ADC without CMFB},
  author={Lane Brooks and Hae-Seung Lee},
  journal={2009 IEEE International Solid-State Circuits Conference - Digest of Technical Papers},
  year={2009},
  pages={166-167,167a}
}
As intrinsic device gain and power supply voltages decrease with CMOS technology scaling, it is becoming increasingly challenging for designers of conventional opamp-based switched-capacitor circuits to meet gain and output swing targets, and to ensure stability. Zero-crossing based circuits (ZCBC) are presented in [1–3] as an alternative architecture where each opamp is replaced with a current source and a zero-crossing detector. This changes the dynamics of the system while preserving the… CONTINUE READING
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