| 摘要 |
<p>Multiple input signal analog-digital converter circuitry for digitalizing, by means of an A/D converter (40), an output signal (So) from a multiplexer (30) which successively delivers a set of input signals applied thereto in parallel has two sample/hold circuits (33,35) which receive the output signal from the multiplexer for repeatedly sampling and holding the signal, and a changeover switch (38) for keeping one of the sample/hold circuits on hold while the other sample/hold circuit samples the output signal from said multiplexer. While one of the sample/hold circuits is holding a signal, the other sample/hold circuit is sampling another signal so that the A/D conversion time of the set of input signals is shortened as compared with prior art circuitry.</p> |
