A Power-Efficient Highly Linear Reconfigurable Biopotential Sensing Amplifier Using Gate-Balanced Pseudoresistors

@article{Wang2015APH,
  title={A Power-Efficient Highly Linear Reconfigurable Biopotential Sensing Amplifier Using Gate-Balanced Pseudoresistors},
  author={Tzu-Yun Wang and Li-Han Liu and Sheng-Yu Peng},
  journal={IEEE Transactions on Circuits and Systems II: Express Briefs},
  year={2015},
  volume={62},
  pages={199-203}
}
A low-power reconfigurable biopotential sensing amplifier with highly linear feedback pseudoresistors is presented. Due to the gate-balanced pseudoresistors, amplifier linearity has been significantly improved, achieving a dynamic range more than 62.8 dB, with total harmonic distortion better than 60 dB across the whole bandwidth. An array of proposed amplifiers was fabricated in a 0.35-μm CMOS process. Measured input-referred noise is 2.81 μV rms with a midband gain of 40.3 dB. The noise… CONTINUE READING
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