Patent ID: 8483645

Claim:
A circuit comprising: a first transconductance stage having an input to receive a signal; a second transconductance stage having an input to receive the signal; and a current combiner circuit coupled to an output of the first transconductance stage and an output of the second transconductance stage, wherein the current combiner circuit forms a path from the first transconductance stage to (i) one of a plurality of output paths or (ii) multiple output paths of the plurality of output paths, the current combiner circuit severs the second transconductance stage from the plurality of output paths when the first transconductance stage forms a path to one of the plurality of output paths, the current combiner circuit forms a path from the second transconductance stage to the multiple output paths of the plurality of output paths when the first transconductance stage forms a path to the multiple output paths of the plurality of output paths, the current combiner circuit couples current from the first transconductance stage to (i) one of a first output path or a second output path or (ii) both the first output path and second output path, the current combiner circuit decouples current from the second transconductance stage to both the first output path and second output path when the first transconductance stage couples current to one of the first output path or the second output path, and the current combiner circuit couples current from the second transconductance stage to both the first output path and the second output path when the first transconductance stage couples current to both the first output path and the second output path.