Reference voltage generators including first and second transistors of same conductivity type and at least one switch

A reference voltage generator that generates a reference voltage at a reference voltage output terminal thereof, the reference voltage generator comprising:

• first and second transistors of same conductivity type, each having a controlling electrode and a pair of controlled electrodes;
• first and second nodes, a respective one of which is connected to respective first and second power supply voltages by way of first and second resistive elements;
• the controlled electrodes of the first transistor being connected between the second node and the reference voltage output terminal, the reference voltage output terminal being further connected with the first node by way of a third resistive element;
• the controlled electrodes of the second transistor being connected between the first node and second power supply voltage;
• the controlling electrode of the first transistor being connected to the first node;
• the controlling electrode of the second transistor being connected to the second node;
• wherein the first and second transistors are biased to provide complementary temperature characteristics;
• and
• a first switch element which is connected between the first power supply voltage and the first resistive element and is switched depending on a control signal indicating a stand-by mode.

A reference voltage generator that generates a reference voltage at a reference voltage output terminal thereof, the reference voltage generator comprising:

• first and second transistors of same conductivity type, each having a controlling electrode and a pair of controlled electrodes;
• first and second nodes, a respective one of which is connected to respective first and second power supply voltages by way of first and second resistive elements;
• the controlled electrodes of the first transistor being connected between the second node and the reference voltage output terminal, the reference voltage output terminal being further connected with the first node by way of a third resistive element;
• the controlled electrodes of the second transistor being connected between the first node and second power supply voltage;
• the controlling electrode of the first transistor being connected to the first node;
• the controlling electrode of the second transistor being connected to the second node, wherein the third resistive element has resistance value which biases the second transistor in a subthreshold region;
• and
• a first switch element which is connected between the first power supply voltage and the first resistive element and is switched depending on a control signal indicating a stand-by mode.