| 摘要 |
<p>The process for the conversion of a digital code involves the construction of two positive unipolar voltages (Vo+, Vo-) ranging between the analog ground level (Vgnd) and an upper full scale level (Vref), and the shifting downward of the second one (Vo-) of these voltages by a quantity equal to its maximum range, so to obtain two unipolar voltages, with positive polarity (Vo+) and negative polarity (Vo-), respectively, and with an amplitude equal to the halved module of the final voltage. The algebraic difference of these two voltages (Vo+, Vo-), is then computed the sign bit determining which one of the two voltages represents time by time the minuend and the subtrahend.</p> |
