The present invention relates to a predistorter for reducing memory effects in RF power amplifiers. A pair of electromagnets formed of stators and coils are opposed to each other with a gap therebetween. A channel layer extends in the second direction along the stack of the plurality of cell gate electrodes, and a variable resistance layer contacting the channel layer. A decoder, configured from logic gates, is coupled to receive to one or more Look Up Table select signals and to generate a set of control signals to control the 2N tri-state buffers so that one or more of the 2N configuration bit inputs is selected by the first stage.