A low-noise gain-tunable amplifier for large array biopotential recording systems

Academic Article


  • This paper presents a low-noise gain-tunable biopotential amplifier that is designed based on a foldedcascode structure. Sub-threshold and self-biasing techniques are employed to achieve a low-noise and low-power amplification. With a bias-current tuning block, the gain of the proposed biopotential amplifier can be precisely adjusted. Designed in a standard 0.13 lm CMOS process, the proposed amplifier provides a 5.9 kHz bandwidth and 30.1 dB gain with 732 nW power. The input-referred noise over the entire bandwidth is 4.3 μV rms, equivalent to a noise-efficiency factor of 2.48. © Springer Science+Business Media, LLC 2012.
  • Authors

    Digital Object Identifier (doi)

    Author List

  • Li YG; Haider MR; Massoud Y
  • Start Page

  • 485
  • End Page

  • 489
  • Volume

  • 74
  • Issue

  • 2