Current-mirror-biased pre-charged logic circuit

Abstract From the Canadian patent

Current-mirror circuitry is utilized on a MOS integrated circuit for regulating the amount of current entering the pre-charged nodes of a pre-charged logic circuit. The current-mirror circuitry involves a series of bias transistors each extending in parallel with a respective one of the pre-charge transistors, and a bias current circuit. The bias current circuit is formed by a transistor and a resistance element which are serially connected across the power supply of the logic circuit. The gate of the bias circuit transistor is connected to the gates of the bias transistors, and the current passing through each bias transistor depends upon the relative dimensions between that transistor and …