Programmable resistive elements as variable tuning elements

摘要

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.

主权项

1. An integrated circuit comprising:
a reference signal generation circuit comprising:
a first resistor and a second resistor formed in at least one front end of line (FEOL) device level of the integrated circuit, wherein
the first resistor and the second resistor are coupled in series,an output node between the first resistor and the second resistor, wherein a reference signal is generated at the output node, anda programmable resistive element formed in at least one back end of line (BEOL) wiring level of the integrated circuit, wherein
the programmable resistive element is coupled in series with the second resistor, anda non-volatile resistive state of the programmable resistive element is variable across a plurality of non-volatile resistive states in response to a program signal applied to the programmable resistive element.