Design of sixth order CIC compensation filter

In this paper, the design of compensated cascaded integrator comb filter (CIC) has been presented using maximally flat (MF) error minimization method for addressing the problem of pass-band droop. The coefficients of the second order and fourth order compensation filters are obtained by applying Maximally Flat conditions. The proposed sixth order CIC compensation filter is the result of cascade of second order and fourth order compensation filters. The proposed compensation filter reduces the pass-band droop of CIC by considerable amount. The comparison has been done with that of the compensation done by the fourth order compensation filter.