Patent ID: 7626458

Claim:
An amplifier driver circuit comprising: a first compensation capacitor; a second compensation capacitor; a first current mirror having an input, a first output, a second output, and a third output, wherein the first output of the first current mirror is coupled to the first compensation capacitor; a second current mirror having an input, a first output, a second output, and a third output, wherein the first output of the first current mirror is coupled to the first compensation capacitor; a third current mirror having an input, a first output, a second output, and a third output, wherein the first output of the third current mirror is coupled to the second compensation capacitor; a fourth current mirror having an input, a first output, a second output, and a third output, wherein the first output is coupled to the second compensation capacitor; a first amplifier input stage having an input, an output, an upper bias terminal, and a lower bias terminal, wherein the input of the first amplifier input stage receives a first input signal, and wherein the upper bias terminal of the first amplifier input stage is coupled to the input of the first current mirror and to the second output of the fourth current mirror, and wherein the lower bias terminal of the first amplifier input stage is coupled to the input of the second current mirror and to the second output of the third current mirror; a first amplifier output stage having an input, an upper bias terminal, and a lower bias terminal, wherein the first outputs of the first and second current mirrors are coupled to the input of the first amplifier output stage, and wherein the upper bias terminal of the first amplifier output stage is coupled to the third output of the first current mirror, and wherein the lower bias terminal of the first amplifier output stage is coupled to the third output of the second current mirror; a second amplifier input stage having an input, an output, an upper bias terminal, and a lower bias terminal, wherein the input of the second amplifier input stage receives a second input signal, and wherein the upper bias terminal of the second amplifier input stage is coupled to the input of the third current mirror and to the second output of the second current mirror, and wherein the lower bias terminal is coupled to the input of the fourth current mirror and to the second output of the first current mirror; and a second amplifier output stage having an input, an upper bias terminal, and a lower bias terminal, wherein the first outputs of the third and fourth current mirrors are coupled to the input of the second amplifier output stage, and wherein the upper bias terminal of the second amplifier output stage is coupled to the third output of the third current mirror, and wherein the lower bias terminal of the second amplifier output stage is coupled to the third output of the fourth current mirror.