Patent ID: 9450575
Filing Date: 2016-09-20
CPC Classification: G11C,H03K

Claim Text:
1. A current comparator comprising: a current comparison block configured to compare current flowing through first and second input terminals; a first current control unit configured to control current flowing through the first input terminal in response to a voltage of a first node; a second current control unit configured to control current flowing through the second input terminal in response to a voltage of a second node; a first driving unit configured to drive the first node with a first voltage higher than a read voltage in a non-comparison period, and drive the first node with the read voltage in a comparison period; and a second driving unit configured to drive the second node with a second voltage higher than a reference voltage in the non-comparison period, and drive the second node with the reference voltage in the comparison period, wherein the first input terminal is electrically coupled with a first load including an RC delay, through the first current control unit, and the second input terminal is electrically coupled with a second load including an RC delay, through the second current control unit.