公开(公告)号：KR1020080114196A

公开(公告)日：2008-12-31

申请号：KR1020070063540

申请日：2007-06-27

Applicant: 에스케이하이닉스 주식회사

Inventor： 정종호 ,  이재진 ,  곽계달 ,  임종만 ,  최재웅 ,  채명준

IPC: H03M1/12

CPC classification number: H03M1/64 ,  H03M1/124 ,  H03M2201/192 ,  H03M2201/831 ,  H03M2201/93

Abstract: An analog-digital converter capable of improving accuracy of conversion operation, on die thermal sensor including the same, and implementing method thereof are provided to facilitate application in a DRAM(Dynamic Random Access Memory) etc by not requiring a charge pump. An analog-digital converter capable of improving accuracy of conversion operation comprises an integrating part(420) and a counting part(430). The integrating part integrates a conversion object voltage having a positive value in a reverse terminal and a first voltage higher than the conversion object voltage in a non-reverse terminal with a positive slope during a predetermined time. The integrating part outputs and integrates a second voltage higher than the first voltage instead of the conversion object voltage in the reverse terminal with a negative slope after the predetermined time. The counting part outputs a digital code by counting a time that an output voltage of the integrating part falls down to a specified level.

Abstract translation: 提供了一种能够提高转换操作精度的模拟数字转换器，包括其的芯片热敏传感器及其实现方法，以便于不需要电荷泵便于在DRAM（动态随机存取存储器）等中应用。 能够提高转换操作精度的模拟数字转换器包括积分部件（420）和计数部件（430）。 积分部在预定时间内积分反向端子中具有正值的转换对象电压和高于非反向端子中的转换对象电压的第一电压，具有正斜率。 在预定时间之后，积分部分输出并积分高于第一电压的第二电压，而不是反向端子中的转换对象电压为负斜率。 计数部通过对积分部的输出电压下降到指定电平的时间进行计数来输出数字码。