Sensor signal processing system and detector

A sensor signal processing system comprising an angular velocity sensor and a detector for processing an output signal from the angular velocity sensor so as to output a detection signal, wherein

• at least a part of the detector is made up of a semiconductor integrated circuit,
• the semiconductor integrated circuit includes
• a driving circuit for driving the angular velocity sensor to generate a reference vibration,
• an AC amplifier for amplifying an output signal from the angular velocity sensor,
• a detection circuit for detecting an output signal from the AC amplifier so as to produce an angular velocity signal that corresponds to an angular velocity applied to the angular velocity sensor, and
• an amplifier circuit including an operational amplifier for amplifying an output signal from the detection circuit so as to output the detection signal,
• an input resistor that is connected to an input terminal of the operational amplifier includes an internal input resistor made up of a semiconductor integrated circuit element and an external input resistor disposed outside the semiconductor integrated circuit and connected to the Internal input resistor in parallel, and
• temperature characteristics of the angular velocity sensor are compensated by temperature characteristics that are a combination of temperature characteristics of the internal input resistor and temperature characteristics of the external Input resistor.

A detector for an angular velocity sensor system that processes an output signal from an angular velocity sensor so as to output a detection signal, wherein

• at least a part of the detector is made up of a semiconductor integrated circuit,
• the semiconductor integrated circuit includes
• a driving circuit for driving the angular velocity sensor to generate a reference vibration,
• an AC amplifier for amplifying an output signal from the angular velocity sensor,
• a detection circuit for detecting an output signal from the AC amplifier and producing an angular velocity signal that corresponds to an angular velocity applied to the angular velocity sensor, and
• an amplifier circuit Including an operational amplifier for amplifying an output signal from the detection circuit so as to output the detection signal, and
• connection terminals are provided so that an external input resistor that is independent of the semiconductor integrated circuit can be connected in parallel to an internal input resistor that is connected to an input terminal of the operational amplifier and is made up of a semiconductor integrated circuit element.