D/a conversion circuit

A D/A conversion circuit comprising:

• a low potential switch, an intermediate potential switch and a high potential switch for selecting one of potentials of a low potential terminal, an intermediate potential terminal and a high potential terminal in response to a control signal, respectively, and outputting a selected potential to an output terminal, wherein:
• the high potential switch includes a first p-type MOS transistor connected between the high potential terminal and the output terminal;
• the low potential switch includes a first n-type MOS transistor connected between the low potential terminal and the output terminal;
• and
• the intermediate potential switch is connected between the intermediate potential terminal and the output terminal and includes a series circuit of a second p-type MOS transistor, which has a threshold voltage lower than that of the first p-type MOS transistor, and a second n-type MOS transistor, which has a threshold voltage lower than that of the first n-type MOS transistor.