Sensor device including a capacitive charge output device connected to an A/D converter

A sensor device comprising:

• an A/D converter including:
• a capacitive adder that computes a difference between an analog input signal and a predicted value;
• a quantizer that quantizes the difference which is output from the capacitive adder, and that converts, for output, the analog input signal into a digital signal;
• and
• a digital prediction filter that generates the predicted value from the digital signal which is output from the quantizer, and that outputs the predicted value to the capacitive adder;
• wherein
• the capacitive adder includes a first series circuit and a first capacitor, the first series circuit including a capacitive charge output device that provides the analog input signal to a connecting point, the first capacitor is charged based on the predicted value output from the digital prediction filter to provide an analog voltage value to the connecting point, and the analog voltage value corresponds to the digital predicted value;
• and
• the connecting point is between the capacitive charge output device and the first capacitor and is connected to an input of the quantizer.