| 摘要 |
PURPOSE:To vary optionally the input/output characteristics of an A/D converting circuit, by changing the reference level of a ladder-type network, which is divided equally and outputs a reference signal, in accordance with the variation of an input signal. CONSTITUTION:An input signal S1 is applied to not only a comparator group 2 but also a signal processing circuit 5. The input signal S1 is reduced to 1/K by the signal processing circuit 5, and this reduced signal is set to a lower potential VRL of a ladder-type network 1. A digital signal obtained by encoding the output of the comparator group 2 by an encoder 3 is equivalent to a signal obtained by converting nonlinearly the input signal S1. When various function generators are used as the signal processing circuit 5, various nonlinear conversions are possible. |
