The present disclosure provides circuit and method embodiments for calibrating a signal of an integrated circuit. A programmable resistive element is coupled in series with a node of the integrated circuit, where at least part of the integrated circuit is formed in at least one front end of line (FEOL) device level. The programmable resistive element is formed in at least one back end of line (BEOL) wiring level, and the programmable resistive element is in a non-volatile resistive state that is variable across a plurality of non-volatile resistive states in response to a program signal applied to the programmable resistive element.