Patent ID: 7786803
Filing Date: 2010-08-31
Classification: H03F

Abstract:
1. An apparatus for amplifying a signal, the apparatus comprising: a differential input circuit with at least a first transistor having a gate terminal, a source terminal, and a drain terminal, wherein the gate terminal of the first transistor is coupled to a terminal for an inverting input and a second transistor having a gate terminal, a source terminal, and a drain terminal, wherein the gate terminal of the second transistor is coupled to a terminal for a non-inverting input, wherein the source terminal of the first transistor and the source terminal of the second transistor are coupled to each other; a plurality of transistors coupled to the differential input circuit, wherein the plurality of transistors are configured to generate a first current for an output node and a second current for a cascode current mirror circuit, the plurality of transistors comprising: the cascode current mirror circuit coupled to the plurality of transistors and to the output node, wherein the cascode current mirror circuit is configured to pass the second current of the plurality of transistors, wherein the cascode current mirror circuit is configured to generate a mirrored current of the second current for the output node.