| 摘要 |
A current sense amplifier is provided to perform stable operation by transmitting data efficiently without increasing data transmission time by controlling CSA output gain. According to a current sense amplifier, a pair of data lines include a first and a second data line(IO,IOB). A sensing part(310) senses difference between two currents inputted through the first and the second data line, and outputs an output voltage of the first and the second data line by converting the current difference into voltage difference. An equalizing part(330) is connected between the first and the second data lines, and equalizes the first and the second data lines during disable state of a sensing start signal. A gain control part(350) is connected between the first and the second data lines, and restricts output voltage difference of the first and the second data line within a constant value. An output part(370) outputs the output voltage as being connected between the first and the second data lines, and outputs a current flowing through the first and the second data line to a ground voltage.
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