| 摘要 |
A D/A converter of a multibit type has improved performance by reducing dispersion of the electric currents of plural electric current sources as much as possible in which the D/A converter has a constant electric current source (10) constructed by 2N (N=2, 3, - - - and here, N=16) constant electric current sources having constant electric current values equal to each other; selectors (7, 8) for selecting Di constant electric current sources according to input data Di {here, Di=0, 1, 2, 3, - - - , (2N-1)} having N-bits in input word length so as to use these 2N constant electric current sources one by one until a sum of values of one input data or continuous plural input data among these 2N constant electric current sources exceeds 2N; and an electric current adder (9) for adding each of the constant electric currents from the Di constant electric current sources selected by the selectors to each other.
|
