On-die capacitance measurement module and method for measuring an on-die capacitive load

摘要

An on-die capacitance measurement module (ODCMM) arranged to measure a capacitance element. The ODCMM comprises an oscillating voltage supply that outputs first and second oscillating voltage signals, the first and second oscillating voltage signals comprising differing phases, and the oscillating voltage supply component coupled to a first node of the capacitance element and arranged to provide thereto the first oscillating voltage signal, and a reference voltage component coupled to a second node of the capacitance element to provide a reference voltage signal. The ODCMM operates in a first mode, wherein the reference voltage component is arranged to provide a constant reference voltage to the second node of the capacitance element. The ODCMM is arranged to operate in a second mode, wherein the reference voltage component is arranged to provide a reference voltage signal representative of the second oscillating voltage signal output by the oscillating voltage supply component to the second node of the capacitance element.

主权项

1. An on-die capacitance measurement module arranged to enable measurement of at least one capacitance element; the on-die capacitance measurement module comprising:
at least one oscillating voltage supply component arranged to output a first oscillating voltage signal and at least one further oscillating voltage signal, the first and at least one further oscillating voltage signals comprising differing phases, and the at least one oscillating voltage supply component being operably coupled to a first node of the at least one capacitance element and arranged to provide thereto the first oscillating voltage signal; and at least one reference voltage component operably coupled to a second node of the at least one capacitance element and arranged to provide thereto a reference voltage signal; wherein the on-die capacitance measurement module is arranged to operate in a first mode, wherein the at least one reference voltage component is arranged to provide a constant reference voltage to the second node of the at least one capacitance element, and to operate in at least one further mode, wherein the at least one reference voltage component is arranged to provide a reference voltage signal representative of the at least one further oscillating voltage signal output by the at least one oscillating voltage supply component to the second node of the at least one capacitance element.