Pressure sensing detection circuit and driving method thereof, electronic device

A pressure sensing detection circuit, comprising:

• an excitation signal circuit, configured to output an alternating current voltage signal;
• a pressure sensing circuit, configured to sense a magnitude of an external pressure and output a detection voltage signal under excitation of the alternating current voltage signal;
• a phase detection circuit, configured to detect a phase change value of the detection voltage signal and convert the phase change value into a voltage value;
• and
• a fourth operational amplifier, wherein a non-inverting input terminal of the fourth operational amplifier is connected to the detection voltage output terminal, an inverting input terminal of the fourth operational amplifier is connected to an output terminal of the fourth operational amplifier, and the output terminal of the fourth operational amplifier is connected to an input terminal of the phase detection circuit.