A Continuous-Time Field Programmable Analog Array Using Parasitic Capacitance Gm-C Filters

Field programmable analog filters (FPAAs) often lack the necessary bandwidth for high performance applications. This paper presents an FPAA based on Gm-C filters, which achieves routing without the use of transmission gates. Not only can the parameters of these filters be tuned, but also their order...

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Bibliographic Details
Published in2007 IEEE International Symposium on Circuits and Systems (ISCAS) pp. 2236 - 2239
Main Authors Henrici, Fabian, Becker, Joachim, Buhmann, Alexander, Ortmanns, Maurits, Manoli, Yiannos
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2007
Subjects
Band pass filters
Bandwidth
Field programmable analog arrays
Filtering
Frequency
Parasitic capacitance
Routing
Sampling methods
Tunable circuits and devices
Wireless communication
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Summary:Field programmable analog filters (FPAAs) often lack the necessary bandwidth for high performance applications. This paper presents an FPAA based on Gm-C filters, which achieves routing without the use of transmission gates. Not only can the parameters of these filters be tuned, but also their order and structure. No additional capacitor is used for integration, only the MOS parasitic capacitances. A maximum bandwidth of 164MHz has been achieved in simulations based on a 130nm 1.2V CMOS process. Distortion performance is high with a HD3 of less than 70 dB for a 50mV@1MHz signal. Influences of parasitic capacitances are simulated using a test chip with 49 Gm-cells arranged in a hexagonal array.
ISBN:1424409209
9781424409204
ISSN:0271-4302
2158-1525
DOI:10.1109/ISCAS.2007.378727