University of Hertfordshire

A CMOS field programmable analog array and its application in continuous-time OTA-C filter design

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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    Final published version, 422 KB, PDF document

  • B. Pankiewicz
  • M. Wojcikowski
  • S. Szczepanski
  • Y. Sun
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Original languageEnglish
Title of host publicationProcs IEEE Int Symposium on Circuits & Systems
Subtitle of host publicationISCAS 2001
ISBN (Print)0-7803-6685-9
Publication statusPublished - 2001


A general configurable analog block (CAB) is presented, which consists of the programmable OTA, programmable capacitor and MOSFET switches. Using the CABs, the universal tunable and field programmable analog array (FPAA) can be constructed, which can realize many signal-processing functions, including filters. A prototype 5×8 CAB array has been fabricated. The chip has also been configured to realize a programmable OTA-C filter. From the simulated and measured results it has been found that filters with frequencies from several kHz to a few MHz can be realized based on the proposed CAB and FPAA.


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