| 摘要 |
In a digital to analog converter, a digital signal is divided into two groups of upper bits and lower bits which are converted to a first and second analog signals respectively. The digital analog converter comprises means for adding a predetermined value of a signal to the lower bits. A carry signal in the addition of the predetermined value is applied to the upper bits. The upper and lower bits of the digital signal thus controlled are converted to a first and second analog signals separately. Thereafter, the two signal are added to produce an analog signal after the second analog signal is attenuated by an attenuating factor depending on the number of the lower bits.
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