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Correlated double sampling technique for continuous-time filters

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2 Author(s)
Y. Nishida ; Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA ; G. C. Temes

A correlated double sampling technique, applicable to continuous-time active-RC filters, is proposed. It provides suppression of DC offset and 1/f noise, and performs gain boosting and level shifting for the opamps used. A biquad lowpass filter is described to demonstrate the application of the technique.

Published in:

Electronics Letters  (Volume:42 ,  Issue: 13 )