Physical quantity outputting circuit

A physical quantity outputting circuit which outputs a first output voltage corresponding to a physical quantity sensing result, comprising:

• a first output terminal which outputs the first output voltage;
• a power supply terminal to which an external power supply voltage is input;
• a reference terminal to which a reference voltage is input;
• a power supply voltage circuit which generates an internal power supply voltage from the external power supply voltage;
• a first output amplifier which is connected to the power supply voltage circuit and applied with the internal power supply voltage, which is connected to the reference terminal and applied with the reference voltage, to which a first input signal corresponding to the physical quantity sensing result is input and which outputs the first output voltage corresponding to the first input signal to the first output terminal;
• a first resistor connected between the power supply terminal and the first output terminal;
• and
• a second resistor connected between the first output terminal and the reference terminal, wherein
• if the external power supply voltage is in a steady state, current that flows from the power supply voltage circuit to the first output amplifier has a constant value regardless of fluctuation of the first output voltage.