High-voltage (HV) current-mirror circuit arrangement e.g. for integrated circuits - includes fifth transistor connected into circuit as diode connected to drain-source circuit of first DMOS-transistor having reference potential applied to its gate

摘要

A current mirror arrangement has forward biassed diode (5) carrying a first current (i1), a first transistor (1) with reference potential (6) applied to its gate and its drain-source circuit connected between a diode (5) terminal and an input terminal (7) for feeding an input current (ie) into the diode (5). A second transistor (2) has its gate terminal coupled to one terminal of the diode (5) and its drain-source circuit connected between the other terminal of the diode (5) and an output terminal (8) for outputting an output current (ia) in a given first ratio to the first current (i1) A third transistor (3) has its gate terminal coupled to one terminal of the diode (5), and its drain-source circuit connected between the other terminal of the diode (5) and one terminal for outputting a second current (i2) in a given second ratio to the first current (i1). A fourth transistor (4), has the second current (i2) as well as a third current (i3) at a given second ratio to the input current fed into its drain, and its drain- source circuit connected between the other terminal of the diode (5) and the input terminal (7).