Analytical synthesis method for designing DDCC and FDCCII-grounded R and C filter structure with stable transfer function

摘要

A voltage-mode nth-order differential difference current conveyor (DDCC) and fully differential current conveyor (FDCCII)-resistor and capacitor filter structures are proposed using a new effective analytical synthesis method (ASM), a succession of innovative algebra operations until a set of simple equations are produced, which are then realized using n integrators and a constraint sub-circuitry, A new ASM can effectively carry out (i) use of all the grounded capacitors and grounded resistors, and (ii) employment of the minimum number of active and passive components and then enjoys the low sensitivities, lower parasitics, power consumption, noise, and smaller chip area leading to simultaneously achieving two important features: (i) higher output performance and (ii) lower cost, without tradeoff. Moreover, the component value variations of all the relative sensitivities have the same incremental percentage or decrement.