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Closed-loop Bio-signal Amplifiers: Experimental Results

  • Jeremy Holleman
  • Fan Zhang
  • Brian Otis
Chapter

Abstract

In this chapter, we will present the measurement results of the telescopic-cascode and complementary low-noise amplifiers discussed in the previous chapter. In order to compare and contrast the performance of these two LNA designs, we fabricated both LNAs in a 0.13 μm CMOS process. As the analog front-end of a neuralrecording channel, each LNA is followed with a variable-gain amplifier (VGA) to accommodate signals of various amplitudes. Fig. 5.1 illustrates one recording channel with the complementary LNA followed by a VGA.

Keywords

Neural Recording 29th Annual International Conference Thermal Noise Voltage Refer Voltage Noise Voltage Noise Spectrum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. [1]
    Denison T, Consoer K, Santa W, Avestruz A, Cooley J, Kelly A (2009) A 2mW 100nV/rtHz chopper-stabilized instrumentation amplifier for chronic measurement of neural field potentials. IEEE J Solid-State Circuits 42(12):2934–2945CrossRefGoogle Scholar
  2. [2]
    Harison R, Charles C (2003) A low-power low-noise CMOS amplifier for neural recording applications. IEEE J Solid-State Circuits 38(6):958–956 CrossRefGoogle Scholar
  3. [3]
    Holleman J, Otis B (2007) A sub-microwatt low-noise amplifier for neural recording. In: 29th annual international conference of the IEEE Engineering in Medicine and Biology Society (EMBS 2007), Lyon, pp 3930–3933Google Scholar
  4. [4]
    Wattanapanitch W, Fee M, Sarpeshkar R (2007) An energy-efficient micropower neural recording amplifier. IEEE Trans Biomed CircuitsSyst 1(2):136–147CrossRefGoogle Scholar
  5. [5]
    Wu H, Xu Y (2006) A 1V 2.3mW biomedical signal acquisition IC. In: Proceedings of the 2006 IEEE international conference on solid-state circuits, Digest of Technical Papers, San Francisco, CA, pp 119–128Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.Department of Electrical Engineering and Computer ScienceUniversity of TennesseeKnoxvilleUSA
  2. 2.Department of Electrical EngineeringUniversity of WashingtonSeattleUSA

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