| 摘要 |
PROBLEM TO BE SOLVED: To provide a digital-to-analog conversion circuit generating multi-bit voltages without causing an increase in the chip area. SOLUTION: A digital-to-analog conversion circuit according to an exemplary aspect of the present invention includes: a gradation voltage generation circuit; a most-significant-bits decoder circuit; a least-significant-bits decoder circuit; and a calculation circuit. The gradation voltage generation circuit generates multiple main voltages corresponding to most significant bits of inputted data and multiple sub voltages corresponding to least significant bits of the inputted data. The most-significant-bits decoder circuit selects one of the main voltages in accordance with the most significant bits, and the least-significant-bits decoder circuit selects one of the sub voltages in accordance with the least significant bits. The calculation circuit performs calculation processing by use of a first main voltage selected by the most-significant-bits decoder circuit, a first sub voltage selected by the least-significant-bits decoder circuit, and a reference voltage. COPYRIGHT: (C)2009,JPO&INPIT
|
