An 18µW 79dB-DR 20KHz-BW MASH ΔΣ modulator utilizing self-biased amplifiers for biomedical applications

@article{Wang2011An17,
  title={An 18µW 79dB-DR 20KHz-BW MASH ΔΣ modulator utilizing self-biased amplifiers for biomedical applications},
  author={Le Wang and Luke Theogarajan},
  journal={2011 IEEE Custom Integrated Circuits Conference (CICC)},
  year={2011},
  pages={1-4}
}
This paper presents a micro power, area-efficient 4th-order MASH delta-sigma modulator based on a novel self-biased amplifiers for neural sensing applications. A high-gain self-biased CMOS amplifier is proposed to achieve low power operation. Floating correlated double sampling technique is devised to enhance the amplifer's gain-linearity and hence the modulator's SFDR and SNDR performance. Fabricated in a 0.13 µm CMOS process, the prototype achieves 71 dB peak SNDR and 79 dB peak DR over 20… CONTINUE READING

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