Instantiation of higher order filters on a continuous-time field-programmable analog array

This work presents techniques for mapping various G m -C filter topologies on a specialized field-programmable analog array (FPAA) for continuous-time filters. Through its unique hexagonal architecture, it is possible to map most well-known G m -C filter topologies to the array, including cascaded b...

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Bibliographic Details
Main Authors: Trendelenburg, S., De Dorigo, D., Henrici, F., Becker, J., Manoli, Y.
Format: Conference Proceeding
Language:English
Subjects:
Arrays
Band pass filters
Capacitance
Field programmable analog arrays
Resistors
Topology
Tuning
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Description
Summary:This work presents techniques for mapping various G m -C filter topologies on a specialized field-programmable analog array (FPAA) for continuous-time filters. Through its unique hexagonal architecture, it is possible to map most well-known G m -C filter topologies to the array, including cascaded biquads, simulated LC-ladders, as well as integrator feedback and feed-forward structures. Through tuning of the digitally programmable filter elements, the properties of the resulting filters, such as bandwidth, filter type or cutoff frequencies can be varied after the filter topology has been instantiated.
ISSN:1548-3746
1558-3899
DOI:10.1109/MWSCAS.2008.4616794