| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain a regulator circuit that can be operated stably with a lower minimum operation voltage, and to achieve an RFID tag using the regulator circuit with the low minimum operation voltage, which has a long communication distance with a reader/writer. <P>SOLUTION: A semiconductor device monitors a voltage between a reference potential and an input potential, and obtains a constant output potential regardless of a value of the voltage, after the voltage exceeds a predetermined threshold voltage. The semiconductor device divides a voltage between the reference potential and the input potential using a plurality of first non-linear elements and at least one linear element to constantly generate a first bias voltage regardless of a value of the voltage, divides a voltage between the reference potential and the input potential using a plurality of second non-linear elements with reference to the first bias voltage to constantly generate a second bias voltage regardless of a value of the voltage, and determines the output potential with reference to the second bias voltage. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
