| 摘要 |
PROBLEM TO BE SOLVED: To obtain a current sense amplifier circuit of paired sub input/output line which assures excellent sensing rate even under a low power supply voltage and realizes stable sensing operation. SOLUTION: PMOS transistors 18, 20 are connected to the paired sub input/ output line SIO, /bar-SIO, the gate terminals thereof are cross-connected, NMOS transistors 22, 24 are provided in series connection thereto and the paired input/ output line IO, /bar-IO are connected to the connecting point of NMOS transistors. The gate terminals of the NMOS transistors 22, 24 are cross- connected to the sub input/output lines SIO, /bar-SIO. Since influence of voltage drop by the threshold value voltage is not applied to a control voltage of the NMOS transistors 22, 24, a lower voltage may be suitable and the operation is stabilized. |
