| 摘要 |
<p>An A/D converter having a first divided reference voltage output circuit (1) for dividing a first reference voltage (Vref1) by m and outputting a plurality of first divided reference voltages (a SIMILAR g); a second divided reference voltage output circuit (3) for dividing a second reference voltage (Vref2) by n and outputting a plurality of second divided reference voltages (10 SIMILAR 50); a level shift circuit (4) for level-shifting the plurality of second divided reference voltages (10 SIMILAR 50) in accordance with an input voltage (INPUT) to be A/D converted, and outputting a plurality of third divided reference voltage: (11 SIMILAR 51); a comparator circuit (2) for comparing each of the plurality of first divided reference voltages (a SIMILAR g) with each of the plurality of third divided reference voltages (11 SIMILAR 51), and outputting a combination of one of the first divided reference voltage (a SIMILAR g) and one of the third divided reference voltages (11 SIMILAR 51) having a smallest voltage difference therebetween; and an encoder circuit (5) for outputting a digital signal converted from the input signal (INPUT), in accordance with the combination outputted from the comparator circuit (2). <IMAGE></p> |
