Patent ID: 8692615
Filing Date: 2014-04-08
Classification: H03F

Abstract:
1. A transconductance circuit, comprising: a complementary set of differential transistor pairs, a first transistor pair having emitters commonly coupled to a first common node and respective collectors coupled to a first pair of output terminals for the transconductance circuit, a second transistor pair having emitters commonly coupled to a second common node, and respective collectors coupled to a second pair of output terminals for the transconductance circuit; each pair having a first transistor to receive a first input voltage at its corresponding base, and a second transistor to receive a second input voltage at its corresponding base; an impedance coupled between the first and second common nodes; complementary sets of doublet differential transistor pairs, each doublet circuit comprising a complementary set of doublet differential transistor pairs, a first transistor of each pair to receive the first input voltage at its base, a second transistor of each pair to receive the second input voltage at its base;