| 摘要 |
PROBLEM TO BE SOLVED: To provide a D/A conversion device that comprises a D/A converter for high-order bit and two D/A converters for low-order bit, especially, the D/A converters for low-order bit being not necessarily high in precision.SOLUTION: A control section 10 divides a digital signal into high-order bits and low-order bits, and supplies the high-order bits to a first D/A converter and the low-order bits to a second D/A converter 12. An attenuator 13 for weighting which has a predetermined attenuation ratio is connected to an output side of the second D/A converter, and a high-order bit analog signal A1 generated through conversion of the first D/A converter 11 and a low-order bit analog signal A2' generated through conversion of the second D/A converter 12 and weighted by the attenuator 13 as specified are added together by an adder 14 and then output. |
