Patent ID: 7804338

Claim:
A drive circuit for driving a driven element, comprising: a drive element for driving the driven element; a correction data input section for adjusting a drive current of the driven element; a resistor having a first end portion and a second end portion, said second end portion being connected to ground; and a control voltage generation section for generating a direction value of the drive current of the driven element according to correction data input from the correction data input section, wherein said control voltage generation section includes, a calculation amplifier having a first input terminal for receiving a standard voltage, a second input terminal, and an output terminal; a first conductive type transistor having a first terminal, a second terminal, and a control terminal, said second terminal being connected to the ground, said control terminal being connected to the output terminal; and a current-mirror circuit, said current-mirror including at least two second conductive type transistors, one of said two second conductive type transistors being a control side transistor, the other of said two second conductive type transistors being a follower side transistor, said control side transistor having a first current output terminal connected to the first terminal, said follower side transistor having a second current output terminal connected to the first end portion and the second input terminal.