Abstract: The present invention provides a level conversion circuit. The circuit is as follows: A cathode of a first equivalent diode is connected to a reference voltage, and an anode of the first equivalent diode is separately connected to a gate of a first switching transistor and a first end of a first capacitor; a second end of the first switching transistor and a first end of a second switching transistor are connected together; a second end of the second capacitor is separately connected to a cathode of a second equivalent diode and a gate of the second switching transistor; and a second end of the second switching transistor is grounded, and an anode of the second equivalent diode is connected to a reference voltage.

Abstract: The present invention provides a level conversion circuit. The circuit is as follows: A cathode of a first equivalent diode is connected to a reference voltage, and an anode of the first equivalent diode is separately connected to a gate of a first switching transistor and a first end of a first capacitor; a second end of the first switching transistor and a first end of a second switching transistor are connected together; a second end of the second capacitor is separately connected to a cathode of a second equivalent diode and a gate of the second switching transistor; and a second end of the second switching transistor is grounded, and an anode of the second equivalent diode is connected to a reference voltage.

Abstract: Embodiments of the present invention provide a comparator and an analog-to-digital converter. A sampling module, a pre-amplifying module, and a coupling module in the comparator obtain a third differential voltage signal according to a positive input signal and a negative reference signal, and obtain a fourth differential voltage signal according to a negative input signal and a positive reference signal. A latch that is in the comparator and formed by a first P-type field effect transistor, a second P-type field effect transistor, a third field effect transistor, a fourth field effect transistor, a first switch, and a second switch is directly cross-coupled through gates, and directly collects the third differential voltage signal and the fourth differential voltage signal to the gates, so as to drive the latch to start positive feedback.

Abstract: Embodiments of the present invention provide a comparator and an analog-to-digital converter. A sampling module, a pre-amplifying module, and a coupling module in the comparator obtain a third differential voltage signal according to a positive input signal and a negative reference signal, and obtain a fourth differential voltage signal according to a negative input signal and a positive reference signal. A latch that is in the comparator and formed by a first P-type field effect transistor, a second P-type field effect transistor, a third field effect transistor, a fourth field effect transistor, a first switch, and a second switch is directly cross-coupled through gates, and directly collects the third differential voltage signal and the fourth differential voltage signal to the gates, so as to drive the latch to start positive feedback.