Patent ID: 8836561

Claim:
A digital-to-analog conversion circuit, comprising: a plurality of current generation circuits each including a constant current source configured to generate a current corresponding to a predetermined parameter, a first metal-oxide semiconductor field-effect transistor (MOSFET) that is connected to the constant current source and is configured to control a supply destination of the current, a first gate control section configured to exclusively supply a first voltage and a second voltage to a gate of the first MOSFET to control the first MOSFET, the first MOSFET being controlled to be turned off by the first voltage and turned on by the second voltage, and a first discharge switch that is connected to the first gate control section and the gate of the first MOSFET, is controlled to be turned on at the same time as the first gate control section supplies the second voltage to discharge charge accumulated in a parasitic capacitance to a predetermined target, the parasitic capacitance being in the first gate control section and the gate of the first MOSFET, and is controlled to be turned off before the first gate control section supplies the first voltage; a first current addition line, to which the first MOSFETs are connected in parallel; a discharge line configured to discharge the charge; a first resistor connected to the first current addition line at a predetermined potential; and a voltage source configured to supply the second voltage to the first gate control sections.