| 摘要 |
An integrated circuit implements a transistor mismatch sensor comprising first and second inverter chains coupled to a register. The register comprises a plurality of flip-flops having clock inputs driven by an output of the first inverter chain and data inputs driven by an output of the second inverter chain. Data outputs of the flip-flops of the register are indicative of an amount of mismatch between transistors of different conductivity types in the first and second inverter chains. For example, the register may comprise a thermometer encoded register providing a digital output signal having a first value indicative of an approximate match in speed, drive strength or other characteristics between the transistors of the first and second conductivity types, with values above and below the first value being indicative of respective first and second different types of relative mismatch in speed, drive strength or other characteristics. |
