Patent ID: 11967949
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 11:
12. A bias circuit comprising:
a first transistor electrically connected between a first power supply node that supplies a first voltage and a first node;
a second transistor electrically connected between the first power supply node and a second node, the second transistor having a control electrode connected to a control electrode of the first transistor, the second transistor having the same conductivity type as a conductivity type of the first transistor;
a current generation circuit connected between a second power supply node that supplies a second voltage and the first and second nodes;
a first control switch connected between the control electrodes of the first and second transistors and one node that is one of the first and second nodes; and
a second control switch connected between the one node and a node that supplies an on-voltage to turn on the first and second transistors, wherein
the current generation circuit is configured such that a first element group electrically connected between the first node and the second power supply node is different from a second element group electrically connected between the second node and the second power supply node, and
the first control switch is turned off when the second control switch is turned on, and the second control switch is turned off when the first control switch is turned on.