SOCWISP: A 9 μA, Addressable Gen2 Sensor Tag for Biosignal Acquisition

  • Daniel Yeager
  • Fan Zhang
  • Azin Zarrasvand
  • Nicole George
  • Thomas Daniel
  • Brian Otis


Biosensors present exciting opportunities in novel medical and scientific applications. However, sensor tags presented to date cannot interface with practical sensors, lack addressability, and/or require a custom (high-cost) interrogator. Our tag provides these features via ultra-low-power circuitry including a low-noise biosignal amplifier, unique tag ID generator, calibration-free 3 MHz oscillator, and EPC C1 Gen2 protocol compatibility. In addition to design details and measurement data from the fabricated IC, we present in vivo muscle temperature measurement from an untethered in-flight hawkmoth.


Charge Pump Ring Oscillator Digital Core Bandgap Reference Successive Approximation Register 



This work was supported in part by NSF ECS Award 0824265, the Komen Endowed Chair, the ONR MURI grant to TLD, and Intel Labs Seattle. This chapter is ©2010 IEEE reprinted, with permission, from IEEE Journal of Solid-State Circuits (JSSC), Vol. 45, No. 10, 2010.


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Daniel Yeager
    • 1
  • Fan Zhang
    • 1
  • Azin Zarrasvand
    • 1
  • Nicole George
    • 2
  • Thomas Daniel
    • 2
  • Brian Otis
    • 1
  1. 1.Department of Electrical EngineeringUniversity of WashingtonSeattleUSA
  2. 2.Department of BiologyUniversity of WashingtonSeattleUSA

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