Variable-delay element with an inverter and a digitally adjustable resistor

摘要

A clock distribution network is provided which includes variable-delay element. The variable-delay element consists of an inverter and a digitally adjustable resistor. The digitally adjustable resistor includes a plurality of transistors provided in plurality of rows and a plurality of columns. The variable-delay element functions logically equivalent to the inverter in which the delay is varied in accordance with the variance in resistance of the digitally adjustable resistor.