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Measured hyperbolic-sine (sinh) CMOS results: A high-order 10 Hz-1 kHz notch filter for 50/60 Hz noise

Lookup NU author(s): Professor Patrick Degenaar

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Abstract

This paper presents proof-of-concept measured results from CMOS hyperbolic-sine (sinh) filters fabricated in a commercially available 0.35 mu m CMOS technology. Results from two chips are reported: a practical sinh integrator and a high order (8th) notch filter dedicated to 50/60 Hz noise rejection and synthesized by means of the proposed integrator. Linearity, frequency and noise measurements are reported. The notch frequency of the 8th order filter can be tuned over almost two decades. Its attenuation exceeds 70 dB for the target frequency range of 20-60 Hz and its dynamic range (for THD < 4%) amounts to 89 dB while consuming 8 mu W from a 2 V power supply level. For an increased power consumption of 74 mu W its dynamic range (for THD < 4%) exceeds 100 dB. (C) 2013 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Kardoulaki EM, Glaros KN, Degenaar P, Katsiamis AG, Ip HMD, Drakakis EM

Publication type: Article

Publication status: Published

Journal: Microelectronics Journal

Year: 2013

Volume: 44

Issue: 12

Pages: 1268-1277

Print publication date: 24/09/2013

ISSN (print): 0959-8324

ISSN (electronic):

Publisher: Elsevier

URL: http://dx.doi.org/10.1016/j.mejo.2013.08.013

DOI: 10.1016/j.mejo.2013.08.013

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