| 摘要 |
PROBLEM TO BE SOLVED: To obtain a DAC whose area is suppressed and a semiconductor device using the DAC. SOLUTION: In this D/A conversion circuit having (n) pieces of resistances A0, A1,..., An-1, (n) pieces of resistances B0, B1,..., Bn-1, two power supply voltage lines L and H in which mutually different potentials are maintained, (n) pieces of switches SWa0, SWa1,..., SWan-1, (n) pieces of switches SWb0, SWb1,..., SWbn-1 and an output line, the (n) pieces of switches SWa0, SWa1,..., SWan-1 and SWb0, SWb1,..., SWbn-1 are controlled by an n-bit digital signal inputted from the outside, and an analog gradation voltage signal is outputted from the output line. |
