| 摘要 |
<p>An A/D converter is described in which an interpolation circuit (15, 16, 17, 18) makes weighted combinations of reference crossing signals (A/Ac, B/Bc) provided by an input circuit (100, 200), so as to obtain an expanded set of reference crossing signals (A/Ac + A1/Ac1..A7/Ac7, B/Bc + B1/Bc1..Bc7). The interpolation circuit (15, 16, 17, 18) is arranged to make at least one weighted combination of reference crossing signals with weighting factors which have a non-integer ratio so as to compensate for a non-linearity in the reference crossing signals (A/Ac, B/Bc). Accordingly, a better compromise is obtained between accuracy, on the one hand, and circuit complexity, on the other hand.</p> |
