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A Field Programmable Analog Array using floating gates for high resolution tuning

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6 Author(s)
Henrici, F. ; Dept. of Microsyst. Eng. (IMTEK), Univ. of Freiburg, Freiburg, Germany ; Becker, J. ; Trendelenburg, S. ; DeDorigo, D.
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This paper presents a Gm-C based field programmable analog array implemented in a 0.13 mum CMOS technology. It combines coarse adjustability via OTA and capacitor arrays, with fine tunability through floating gate bias current sources. It can instantiate almost arbitrarily complex continuous-time filters in a frequency range from 660 kHz to 135 MHz. Measurements show that filter coefficients can be tuned in steps of at least 1.5%, depending on filter type and bandwidth.

Published in:

Circuits and Systems, 2009. ISCAS 2009. IEEE International Symposium on

Date of Conference:

24-27 May 2009