Embodiments are directed to a driver circuit including a first amplifier having a voltage follower configured to control a first node to maintain a voltage of the first node at a constant value. By maintaining the first node voltage, the first amplifier having the voltage follower is further configured to have a first amplifier output current into the first node at a value without the effect of the voltage fluctuation. The driver circuit further includes a second amplifier configured to control a second node, wherein the second amplifier is in a current mirror configuration with respect to the first amplifier such that a second amplifier current output is a highly precise mirror of the first amplifier current output.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A method of operating a driver circuit, the method comprising: using a first amplifier comprising a voltage follower to control a first node to maintain a voltage of the first node at a constant value, and to have a first amplifier output current into the first node at a value without the effect of a voltage fluctuation; using a second amplifier to control a second node; and operating the second amplifier in a current mirror configuration with respect to the first amplifier such that a second amplifier current output is a mirror of the first amplifier current output. 2. The method of claim 1, wherein: the first node comprises an output of a weighted current addition circuit; the weighted current addition circuit pushes current through the first node; the weighted current addition circuit pulls current through the first node; and the second node comprises an input to an integrating capacitor circuit. 3. The method of claim 1, wherein: the first amplifier comprises a first amplifier positive input and a first amplifier negative input; the second amplifier comprises a second amplifier positive input and a second amplifier negative input; inputs to the first amplifier positive input and the second amplifier positive input are substantially the same; and inputs to the first amplifier negative input and the second amplifier negative input are substantially the same. 4. The method of claim 1, wherein: the first amplifier comprises first amplifier internal components; the second amplifier comprises second amplifier internal components; and the second amplifier internal components have substantially the same structure and size as the first amplifier internal components. 5. A method of operating a driver circuit, the method comprising: using a first amplifier comprising a voltage follower to control a first node to maintain a voltage of the first node at a constant value; wherein the first amplifier comprises a first amplifier first stage and a first amplifier final stage which generates an output current for reference; using the first amplifier comprising the voltage follower to further have the first amplifier final stage output current into the first node at a value without effect by a voltage fluctuation; wherein the first amplifier final stage output is coupled into the first node; using a second amplifier to control a second node; and operating the second amplifier in a current mirror configuration with respect to the first amplifier first stage such that a second amplifier current output is a mirror of the first amplifier final stage current output. 6. The method of claim 5, wherein: the first amplifier first stage comprises a first amplifier first stage positive output and a first amplifier first stage negative output; the second amplifier comprises a second amplifier positive input and a second amplifier negative input; the first amplifier first stage positive output is coupled to the first amplifier final stage and the second amplifier positive input; and the first amplifier first stage negative output is coupled to the first amplifier final stage and the second amplifier negative input. 7. The method of claim 5, wherein: the first amplifier final stage comprises first amplifier final stage internal components; the second amplifier comprises second amplifier internal components; and the second amplifier internal components have substantially the same structure and size as the first amplifier final stage internal components. 8. A driver circuit comprising: a first amplifier comprising a voltage follower configured to control a first node to maintain a voltage of the first node at a constant value, and to have a first amplifier output current into the first node at value without effect by a voltage fluctuation; and a second amplifier configured to control a second node; wherein the second amplifier is in a current mirror configuration with respect to the first amplifier such that a second amplifier current output is a mirror of the first amplifier current output. 9. The circuit of claim 8, wherein the first node comprises an output of a weighted current addition circuit. 10. The circuit of claim 9, wherein the weighted current addition circuit pushes current through the first node. 11. The circuit of claim 9, wherein the weighted current addition circuit pulls current through the first node. 12. The circuit of claim 8, wherein the second node comprises an input to an integrating capacitor circuit. 13. The circuit of claim 8, wherein: the first amplifier comprises a first amplifier positive input and a first amplifier negative input; the second amplifier comprises a second amplifier positive input and a second amplifier negative input; inputs to the first amplifier positive input and the second amplifier positive input are substantially the same; and inputs to the first amplifier negative input and the second amplifier negative input are substantially the same. 14. The circuit of claim 8, wherein: the first amplifier comprises first amplifier internal components; the second amplifier comprises second amplifier internal components; and the second amplifier internal components have substantially the same structure and size as the first amplifier internal components. 15. A driver circuit comprising: a first amplifier comprising a first amplifier first stage and a first amplifier final stage which generates an output current as a reference current of a current mirror; wherein the first amplifier final stage current output node is coupled into a first node; wherein the first amplifier further comprises a voltage follower configured to control the first node to maintain a voltage of the first node at a constant value, and to have the first amplifier final stage output current into the first node at a value without the effect by a voltage fluctuation; and a second amplifier configured to control a second node; wherein the second amplifier is in a current mirror configuration with respect to the first amplifier final stage such that a second amplifier current output is a mirror of the first amplifier final stage current output. 16. The circuit of claim 15, wherein the first node comprises an output of a weighted current addition circuit. 17. The circuit of claim 16, wherein the weighted current addition circuit pushes current through the first node. 18. The circuit of claim 16, wherein the weighted current addition circuit pulls current through the first node. 19. The circuit of claim 15, wherein the second node comprises an input to an integrating capacitor circuit. 20. The circuit of claim 15, wherein: the first amplifier first stage comprises a first amplifier first stage positive output and a first amplifier first stage negative output; the first amplifier final stage comprises a first amplifier final stage positive input and a first amplifier final stage negative input; the second amplifier comprises a second amplifier positive input and a second amplifier negative input; the first amplifier first stage positive output is coupled to the first amplifier final stage positive input and the second amplifier positive input; and the first amplifier first stage negative output is coupled to the first amplifier final stage negative input and the second amplifier negative input. 21. The circuit of claim 15, wherein: the first amplifier final stage comprises first amplifier final stage internal components; the second amplifier comprises second amplifier internal components; and the first amplifier final stage internal components have substantially the same structure and size as the second amplifier internal components. 22. A driver circuit comprising: a first amplifier comprising a first amplifier first stage, a first amplifier first stage positive output, a first amplifier first stage negative output, a first amplifier final stage and a first amplifier final stage output current which generates output current as a reference current of a current mirror; wherein the first amplifier final stage current output node is coupled into a first node; wherein the first amplifier further comprises a voltage follower configured to control the first node to maintain a voltage of the first node at a constant value, and to have the first amplifier final stage output current into the first node at a value without effect by a voltage fluctuation; and a second amplifier configured to control a second node; wherein the second amplifier comprises a second amplifier positive input and a second amplifier negative input; wherein the first amplifier final stage comprises a first amplifier final stage positive input and a first amplifier negative input; wherein the second amplifier comprises a second amplifier positive input and second amplifier negative input; wherein the first amplifier first stage positive output is coupled to the first amplifier final stage positive input and the second amplifier positive input; wherein the first amplifier first stage negative output is coupled to the first amplifier final stage negative input and the second amplifier negative input; wherein the first amplifier final stage comprises first amplifier final stage internal components; wherein the second amplifier comprises second amplifier internal components; wherein the second amplifier final stage internal components have substantially the same structure and size as the first amplifier internal components; and wherein the second amplifier is in a current mirror configuration with respect to the first amplifier final stage such that a second amplifier current output is a mirror of the first amplifier final stage current output. 23. The circuit of claim 22, wherein the first node comprises an output of a weighted current addition circuit. 24. The circuit of claim 23, wherein: the weighted current addition circuit pushes current through the first node; or the weighted current addition circuit pulls current through the first node. 25. The circuit of claim 22, wherein the second node comprises an input to an integrating capacitor circuit.