Oscillation amplitude detection circuit and detection method for clock oscillator chip

The invention belongs to the technical field of clock oscillator chips, and relates to an oscillation amplitude detection circuit and method for a clock oscillator chip, and the circuit consists of a filter capacitor, an amplification circuit, an inverter circuit, a capacitor, and a feedback loop. One VIN end of the filter capacitor is connected to the output end of the oscillating circuit, the other end of the filter capacitor is connected with the input end of the amplifying circuit, the output end of the amplifying circuit is connected with the input end of the phase inverting circuit, the output end of the phase inverting circuit outputs signals, and the feedback loop is connected in the phase inverting circuit. The capacitor is connected between the amplifying circuit and the phase inverting circuit; according to the oscillation amplitude detection circuit, the output waveform of the clock oscillator chip can be in a normal state from the beginning, the working stability of the chip is ensured, the chip