A vehicle sensor apparatus comprising: an interface circuit adapted for being connected both to a digital sensor and an analog sensor, only one at a time, as a sensor that generates an electric signal (S DIG, S ALG) corresponding to a physical quantity of a detection target; a calculation circuit that calculates the physical quantity of the detection target based on the electric signal (S DIG, S ALG) generated by the sensor, and a control circuit for controlling the control target based on the calculated physical quantity; wherein the calculation circuit has a storage apparatus that stores type information indicating which of the digital sensor and the analog sensor is used as the sensor that generates the electric signal (S DIG, S ALG) corresponding to the physical quantity of the detection target, the interface circuit has: a first power supply circuit that generates an operating voltage (V1, V2) to be supplied to the sensor; a second power supply circuit that generates a voltage (V sync) allowing generation of a synchronizing signal (S sync) for the digital sensor when the digital sensor is used as the sensor that generates the electric signal (S DIG, S ALG) corresponding to the physical quantity of the detection target; a receiver circuit that receives the electric signal (S DIG, S ALG) generated by the digital sensor when the digital sensor is used as the sensor that generates the electric signal (S DIG, S ALG) corresponding to the physical quantity of the detection target; and an operation determination circuit that stops an operation at least of the second power supply circuit when the analog sensor is used as the sensor that generates the electric signal (S DIG, S ALG) corresponding to the physical quantity of the detection target; and the operation determination circuit determines, based on the type information, which of the digital sensor and the analog sensor is used as the sensor that generates the electric signal (S DIG, S ALG) corresponding to the physical quantity of the detection target. an interface circuit adapted for being connected both to a digital sensor and an analog sensor, only one at a time, as a sensor that generates an electric signal (S DIG, S ALG) corresponding to a physical quantity of a detection target; a calculation circuit that calculates the physical quantity of the detection target based on the electric signal (S DIG, S ALG) generated by the sensor, and a control circuit for controlling the control target based on the calculated physical quantity; wherein the calculation circuit has a storage apparatus that stores type information indicating which of the digital sensor and the analog sensor is used as the sensor that generates the electric signal (S DIG, S ALG) corresponding to the physical quantity of the detection target, the interface circuit has: a first power supply circuit that generates an operating voltage (V1, V2) to be supplied to the sensor; a second power supply circuit that generates a voltage (V sync) allowing generation of a synchronizing signal (S sync) for the digital sensor when the digital sensor is used as the sensor that generates the electric signal (S DIG, S ALG) corresponding to the physical quantity of the detection target; a receiver circuit that receives the electric signal (S DIG, S ALG) generated by the digital sensor when the digital sensor is used as the sensor that generates the electric signal (S DIG, S ALG) corresponding to the physical quantity of the detection target; and an operation determination circuit that stops an operation at least of the second power supply circuit when the analog sensor is used as the sensor that generates the electric signal (S DIG, S ALG) corresponding to the physical quantity of the detection target; and a first power supply circuit that generates an operating voltage (V1, V2) to be supplied to the sensor; a second power supply circuit that generates a voltage (V sync) allowing generation of a synchronizing signal (S sync) for the digital sensor when the digital sensor is used as the sensor that generates the electric signal (S DIG, S ALG) corresponding to the physical quantity of the detection target; a receiver circuit that receives the electric signal (S DIG, S ALG) generated by the digital sensor when the digital sensor is used as the sensor that generates the electric signal (S DIG, S ALG) corresponding to the physical quantity of the detection target; and an operation determination circuit that stops an operation at least of the second power supply circuit when the analog sensor is used as the sensor that generates the electric signal (S DIG, S ALG) corresponding to the physical quantity of the detection target; and the operation determination circuit determines, based on the type information, which of the digital sensor and the analog sensor is used as the sensor that generates the electric signal (S DIG, S ALG) corresponding to the physical quantity of the detection target.