Patent ID: 7834689

Claim:
An amplifier comprising: an input stage for receiving a differential input signal and providing a first output and a second output; a current mirror having an input coupled to the first output of the input stage and having an output for providing a first control signal; a gain boosting stage having a first section and a second section, each of the first section and the second section having a first input, a second input, and an output, the first input of the first section being coupled to the second output of the input stage, the second input of the first section comprising a first node between a source and a drain of a first pair of series-coupled transistors, the first input of the second section being coupled to the output of the current mirror, the second input of the second section comprising a second node between a source and a drain of a second pair of series-coupled transistors; a pre-driver stage having a first input coupled to the second output of the input stage, a second input coupled to the output of the first section of the gain boosting stage, a third input coupled to the output of the current mirror, a fourth input coupled to the output of the second section of the gain boosting stage, a first output coupled to the second input of the first section of the gain boosting stage, a second output, a third output coupled to the second input of the second section of the gain boosting stage, and a fourth output; and an output stage having a first input coupled to the second output of the pre-driver stage, a second input coupled to the fourth output of the pre-driver stage, and an output for providing an output signal.