Multimode current mirror circuitry

摘要

In one embodiment, an integrated circuit current mirror circuit is disclosed. The integrated circuit current mirror circuit includes a reference circuit, an output circuit and a mode selector circuit. The reference circuit includes an input terminal that receives a reference current. The output circuit generates an output current that is proportional to the reference current. The output circuit is coupled to a load circuit. The output current is provided to the load circuit. The mode selector circuit is coupled to the reference circuit and the output circuit. The mode selector circuit receives a plurality of mode control signals having different voltage levels. The mode selector circuit selects one of the mode control signals. The selected mode control signal is routed to the reference circuit and the output circuit to place the current mirror circuit in a desired mode.

主权项

1. A current mirror circuit, comprising:
a reference circuit having an input terminal that receives a reference current; an output circuit that is coupled to the reference circuit and that generates an output current that is proportional to the reference current; and a mode selector circuit coupled to the reference circuit and the output circuit, wherein the mode selector circuit comprises a multiplexer that receives a mode select signal specifying a selected current mirror mode of operation and that has a data input that receives a power supply voltage that is fixed throughout operation of the current mirror circuit.