A TDC-Based Front-End for Rapid Impedance Spectroscopy Conference Paper

abstract

• Impedance spectroscopy (IS) is an important technique for monitoring and detection of biomaterials. In order to enable point-of-care systems, low-cost IS systems capable of rapidly measuring a wide range of biomaterials are required. This paper presents an IS front-end which utilizes a time-to-digital converter (TDC) and a peak detector circuit (PDC) for quick measurement of both impedance phase and magnitude, respectively. Designed in a 0.18m CMOS process, the front-end is capable of performing impedance measurements in 6s at frequencies ranging from 100Hz-10MHz and with a 100-1M dynamic range. Simulation results with cell impedance models show that the system achieves <2.5% magnitude and <2.2 phase error. The front-end consumes 28mW total power and occupies 0.4mm2 area. 2013 IEEE.

name of conference

• 2013 IEEE 56th International Midwest Symposium on Circuits and Systems (MWSCAS)

authors

• Palermo, Samuel

published proceedings

• 2013 IEEE 56TH INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS)

author list (cited authors)

• Huang, H., & Palermo, S.

citation count

• 18

complete list of authors

• Huang, Hao||Palermo, Samuel

publication date

• January 2013

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• The ... Midwest Symposium on Circuits and Systems conference proceedings : MWSCAS. Midwest Symposium on Circuits and Systems  Journal

keywords

• 7 Affordable And Clean Energy
• Bioengineering

Digital Object Identifier (DOI)

• 10.1109/mwscas.2013.6674612

International Standard Book Number (ISBN) 13

• 9781479900664

start page

• 169

end page

• 172

URL

• http://dx.doi.org/10.1109/mwscas.2013.6674612

user-defined tag

• 7 Affordable and Clean Energy