| 摘要 |
<p>This gradient voltage generating circuit is configured such that a plurality of voltage follower circuits (2_1~2_64) are divided between at least two gradient voltage generating units (12_D1, 12_D2), and the two or more gradient voltage generating units drive the respective voltage follower circuit included therein at different power supply voltages having a lower potential difference than the potential difference between the maximum voltage (?ref1) and the minimum voltage (?ref64) among a plurality of reference voltages. A plurality of selection circuits (3_1~3_M) are also similarly divided between at least two switch circuits (3_D1, 3_D2), and driven. Furthermore, a pre-charge circuit can be further provided in the output path from the switch circuit to an output terminal, said pre-charge circuit being configured such that, by means of a process for changing the gradient voltage selection, the output terminal voltage is maintained at an intermediate voltage which is between the maximum and minimum voltages among the plurality of reference voltages.</p> |
