REFERENCE CURRENT SETTING CIRCUIT

摘要

A reference current setting circuit according to one embodiment includes a first terminal, a first current mirror circuit, a second current mirror circuit, and a third current mirror circuit. The first terminal is connected to a ground potential via a first resistor. The first current mirror circuit includes a first transistor with a source connected to a reference voltage and a drain serving as a first input terminal, and a second transistor with a source connected to the first terminal and a drain serving as a first output terminal, the drain of the first transistor being connected to a gate of the first transistor and a gate of the second transistor.

主权项

1. A reference current setting circuit comprising:
a first terminal connected to a ground potential via a first resistor; a first current mirror circuit including a first transistor with a source connected to a reference voltage and a drain serving as a first input terminal, and a second transistor with a source connected to the first terminal and a drain serving as a first output terminal, the drain of the first transistor being connected to a gate of the first transistor and a gate of the second transistor; a second current mirror circuit including a second input terminal and second to fourth output terminals, the second input terminal connected to the first output terminal, the second output terminal connected to the first input terminal, the second current mirror circuit configured to be supplied with a first voltage power supply and to output a reference current from the third output terminal; and a third current mirror circuit including a fifth output terminal connected to the reference voltage source and a third input terminal connected to the fourth output terminal.