Patent ID: 9379672
Filing Date: 2016-06-28
CPC Classification: H03F

Claim Text:
1. A differential current amplifier for providing an amplified current output signal at a pair of differential output nodes based on an input current signal provided at a pair of differential inputs nodes, the differential current amplifier comprising: a first and second primary non-inverting unity-gain branches having the input current signal injected into the respective first and second primary branches and providing output currents at the differential output nodes, wherein the output currents substantially reuses all of the input current signal at the differential output nodes; and a first and second secondary branches scaled with respect to the first and second primary branches and cross-coupled relative to outputs the first and second primary branches to provide scaled output currents at the differential output nodes based on a scaling factor N between the primary branches and the secondary branches, wherein N is greater than zero; wherein an overall gain of the amplified current output signal relative to the input current signal is 1 plus N.