Patent ID: 7514989

Claim:
A circuit, realizing a dynamically matched array of current sources, comprising as components: an Internal Current Reference stage; an array of Current Source sets having selectable trim bit elements; a Current Comparator device together with one or more controlled single-pole Toggle Switches; and a Trim Bit Select Logic (TBSL) block, whereby each set of Current Sources is on one side connected to said Internal Current Reference stage and on the other side outputting its source current to one of said controlled single-pole Toggle Switches, furthermore each of said controlled single-pole Toggle Switches relays either to its output terminal or to one input terminal of said Current Comparator device, which in turn receives also input on another input terminal from said Internal Current Reference stage thus allowing comparison under control from said TBSL block, so that each Current Source set can be matched to said Internal Current Reference with the help of said selectable trim bit elements.