数字滤波器的选择：AD7190、AD7192 AN-0979 One Technology Way t P.O. Box 9106 t Norwood, MA 02062-9106, U.S.A. t Tel: 781.329.4700 t Fax: 781.461.3113 t www.analog.com ǖAD7190AD7192 ǖMary McCarthy 50 Hz/60 Hz 0 Σ-Δ ADCsinc3sinc4 ……