Patent ID: 6211583
Filing Date: 2001-04-03
Classification: H03K

Abstract:
A high-speed current switch receiving a control signal and a complementary, control signal, and having an output terminal, an internal node, a supply node, and a ground node, the high-speed current switch comprising:a current source coupled to the ground node;a differential switch coupled to the current source, the internal node, and the output terminal, wherein the differential switch receives the control signal and the complementary control signal;an op-amp having a first op-amp input coupled to the output terminal, a second op-amp input coupled to the internal node, and an op-amp output;a feedback switch coupled to the op-amp output;a biasing transistor having a biasing gate coupled to the output of the feedback switch, a biasing source coupled to the supply node, and a biasing drain; anda second current switch, coupled between the drain of the biasing transistor and the internal node.