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Fully integrated active‐ Rc filters using mos and non‐balanced structure
Author(s) -
Acar C.,
Ghausi M. S.
Publication year - 1987
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.4490150203
Subject(s) - resistor , switched capacitor , capacitor , electronic engineering , electronic circuit , active filter , transistor , linearity , rc circuit , filter (signal processing) , voltage , simple (philosophy) , electrical engineering , computer science , engineering , philosophy , epistemology
A technique for implementing fully integrated continuous time non‐switched capacitor filter has been recently reported in the literature. the technique uses a balanced structure using op‐amps, capacitors and MOS transistors operated in the non‐saturated region as voltage‐controlled resistors. In order to eliminate the non‐linearity of the MOS transistors over an extended voltage range the current techniques use fully balanced circuits. This paper provides a simple technique for cancellation of non‐linearities, thereby reducing the number of elements, and proposes several simple circuits. the technique is then used in the design of high‐order filters.