A CURRENT CONVEYOR BASED FIELD-PROGRAMMABLE ANALOG ARRAY

An approach for designing a Field Programmable Analog Array (FPAA) is described. The analog array is based on current conveyors and benefits from two major interests: a large bandwidth and a low number of discr ete components needed for the implementation of analog functions. An A nalog Elementary Cell (AEC), based on current conveyors has been devel oped, and it is associated with programmable resistors and capacitors. Analog functions can be performed programming several AECs as current -mode amplifiers, analog multipliers, etc. The main purpose of this pa per is to introduce current conveyor based analog blocks which are ver y-well suited for the implementation of FPAA. A particular interconnec tion architecture is addressed using current conveyors as switches. Th e major key feature of the proposed approach is that current conveyors are used as active elements and switching elements. A new topology ba sed on the developed AEC is proposed and should be shortly validated.