| 摘要 |
PROBLEM TO BE SOLVED: To provide a D/A converter which can inhibit deterioration in D/A conversion accuracy.SOLUTION: A D/A converter 1 comprises: series-connected resistive elements R0-R5; resistive elements R10-R15 which are set at resistance values twice the resistance value of respective resistive elements R0-R5 and have first terminals connected to the resistive elements R0-R5; and switch circuits SW0-SW5 connected to second terminals of the resistive elements R10-R15, respectively. The D/A converter 1 comprises: resistive elements R20-R25 which have first terminals connected to the first terminals of the resistive elements R10-R15 and which are set at resistance values equivalent with resistance values of the resistive elements R10-R15, respectively; switch circuits S0-S5 connected to between second terminals of the resistive elements R20-R25, respectively; and a control circuit 50 for controlling the switch circuits SW0-SW5, S0-S5. The switch circuits SW0-SW5 set states of nodes N0-N5 at any one of low-potential voltage GND, high-potential voltage VD, and high impedance. |
