| 摘要 |
<p>PURPOSE:To execute the high sensitivity and the high speed of sense action by using the amplifier in which the load is an N channel current mirror circuit, as a CMOS type differential amplifier. CONSTITUTION:As a CMOS type differential amplifier 10 to compare a sense line electric potential VS with a reference electric potential Vref from a dummy circuit 9 and amplify the sense, an N channel current mirror type amplifier is used in which the load is an N channel current mirror circuit and which has differential pair transistors P3 and P4 of a P channel and a transistor P5 for a constant electric current source of the P channel. Differential pair transistors P1 and P2 and transistors N4 and N5 for the current mirror are formed to the same size, a Vcc electric power source electric potential is given to the source of a transistor P3 for the constant electric current source, and a Vss electric potential (earth electric potential) is given to the source of the transistors N4 and N5 for the current mirror.</p> |
