1. A signal processing apparatus, comprising: a time-interleaved system operable to distribute a signal into a first processing pathway and, following a predetermined amount of time, into a second processing pathway; and a delay structure coupled to said second processing pathway, said delay structure including at least one floating-gate field effect transistor, wherein the predetermined amount of time depends on an amount of electrical charge stored on the floating gate of the at least one floating-gate field effect transistor.