Signal generation circuit and temperature sensor

A signal generation circuit comprising:

• a first diode whose anode is coupled to a first node;
• a first resistive element whose one-side terminal is coupled to a second node;
• a second diode whose anode is coupled to other-side terminal of the first resistive element, whose cathode is coupled to a cathode of the first diode, and which has a current drive capability larger than the first diode;
• a current source that causes the first and second nodes to have a same voltage and feeds a current of a same value through the first and second diodes;
• an output circuit that is coupled between the cathodes of the first and second diodes and a line of a ground voltage and which outputs, on the basis of a current of a sum of the currents flowing through the first and second diodes, a voltage proportional to an absolute temperature,
• an amplifier circuit that amplifies an output voltage of the output circuit;
• and
• a variable conductance circuit that is coupled between the output terminal of the amplifier circuit and a line of a reference voltage and causes a current to flow from an output terminal of the signal generation circuit to the line of the reference voltage.