QUALITY FACTOR DETECTION CIRCUIT AND DETECTION METHOD BASED ON OSCILLATING CIRCUIT, AND ELECTRONIC DEVICE

Embodiments of this application provide a quality factor measurement circuit and measurement method based on an oscillating circuit, and an electronic device, and relate to the field of electronic technologies, so as to obtain a Q value quickly with high precision. The quality factor measurement circuit based on an oscillating circuit includes: the oscillating circuit, a measurement control circuit, and a voltage sampling circuit, where the measurement control circuit is connected to a power supply, and the measurement control circuit is connected to the oscillating circuit; and the oscillating circuit includes an inductor and a capacitor connected in series, where a first terminal of the inductor is connected to the measurement control circuit, a second terminal of the inductor is connected to a first terminal of the capacitor, and a second terminal of the capacitor is connected to a common voltage terminal or the measurement control circuit; the measurement control circuit is configured to connect the inductor and the capacitor to the power supply in series to form a charging loop to charge the capacitor; and further configured to: connect the inductor and the capacitor to form an LC oscillating loop; or connect the inductor and the capacitor to form an LC oscillating loop, and connect a predetermined resistor in series to the LC oscillating loop; and the voltage sampling circuit is connected to the first terminal of the capacitor.