Conversion circuit and detection circuit

A detection circuit, comprising:

• a photodiode configured to receive a reflected light and generate a current signal according to the reflected light;
• a conversion circuit;
• a fully differential amplification circuit, comprising:
• a first input terminal coupled to a first integration output terminal of the conversion circuit;
• a second input terminal coupled to a second integration output terminal of the conversion circuit;
• a first output terminal;
• and
• a second output terminal;
• wherein the conversion circuit is configured for converting the current signal flowing through a sensing component into a first output voltage signal, comprising:
• a first current eliminating circuit configured to eliminate a first current in the current signal, the first current eliminating circuit comprising:
• a current sample and hold circuit;
• and
• a current driving circuit coupled between the sensing component and the current sample and hold circuit;
• a second current eliminating circuit coupled to the sensing component and configured to eliminate a second current in the current signal;
• and
• an integrating circuit coupled to the sensing component and configured to integrate a third current in the current signal, the integrating circuit having a first integration output terminal and a second integration output terminal, wherein the first integration output terminal and the second integration output terminal are configured to output the first output voltage signal.