Patent ID: 7233171

Claim:
A circuit for providing a current response, comprising: a transconductance circuit that is arranged to provide an output current based at least in part on a differential input voltage, wherein the transconductance circuit is arranged to provide the output current at an output current node, and wherein the transconductance circuit includes: a differential pair including a first transistor and a second transistor; a tail current source that is coupled to the differential pair; a first current mirror circuit having at least an input, a first output, and a second output, wherein the input of the first current mirror circuit is coupled to the first transistor, the first output of the current mirror circuit is coupled to an output current node; and wherein the first current mirror circuit is arranged to provide a first mirror current at the second output of the first current mirror circuit; and a first output current boost circuit that is coupled to the second output of the first current mirror, wherein the first output current boost circuit is arranged to trip if the first mirror current reaches a threshold, and further arranged to increase the output current if the output current boost circuit is tripped.