Output circuit

An output circuit comprising:

• a first transistor configured to output a first output voltage or output current from a drain of the first transistor;
• a second transistor configured to output a second output voltage or output current from a drain of the second transistor;
• an operational amplifier having a first input terminal and a second input terminal and configured to output a control voltage corresponding to a difference between a reference voltage supplied to the first input terminal and an input voltage supplied to the second input terminal;
• a switch circuit that controls an output of the first output voltage or output current and the second output voltage or output current in accordance with a control signal, the switch circuit comprising:
• a first switch that supplies the control voltage to a gate of the first transistor when the control signal is in a first state and that supplies the control voltage to a gate of the second transistor when the control signal is in a second state,
• a second switch that electrically connects the drain of the first transistor to the second input terminal of the operational amplifier when the control signal is in the first state and that electrically connects the drain of the second transistor to the second input terminal of the operational amplifier when the control signal is in the second state,
• a third switch that supplies a first voltage to the gate of the first transistor to turn off the first transistor when the control signal is in the second state and that stops supply of the first voltage to the gate of the first transistor when the control signal is in the first state, and
• a fourth switch that supplies a second voltage to the gate of the second transistor to turn off the second transistor when the control signal is in the first state and that stops supply of the second voltage to the gate of the second transistor when the control signal is in the second state;
• a first load electrically connected between the drain of the first transistor and ground;
• and
• a second load electrically connected between the drain of the second transistor and ground,
• wherein when the control signal is in the first state, the first output voltage or output current is output from the drain of the first transistor, and
• wherein when the control signal is in the second state, the second output voltage or output current is output from the drain of the second transistor.