Patent ID: 7130412

Claim:
An amplifier driver for driving a load, comprising: a first operational amplifier having first and second differential polarity inputs and an output; an inverting level shifter connected to said output of said first operational amplifier and producing first and second level-shifted outputs; complementary first and second output transistor circuits and first and second current mirror circuits operatively connected to respective first and second level-shifted outputs and operative with each other, wherein said first and second current mirror circuits form a current mirror node and said first and second output transistor circuits form an output node, wherein at a no-load condition, the voltage at the current mirror node and voltage at the output node are substantially the same; a current feedback circuit extending from the current mirror node to an input of the first operational amplifier, and including a feedback operational amplifier positioned within the current feedback circuit and having an output, and a first input operatively connected to said output node and a second input operatively connected to said current mirror node, and first and second auxiliary bias current source circuits and first and second current mirror circuits operatively connected to said output of said feedback operational amplifier such that the current mirror node substantially tracks the output voltage at the output current node and substantially removes current mirror distortion for different values of load resistance.