Signal sampling circuit, motor control circuit and signal sampling method

The invention provides a signal sampling circuit, a motor control circuit and a signal sampling method, relates to the technical field of chips, and can solve the problem that the signal sampling circuit is subjected to board-level interference. The signal sampling circuit comprises a sampling resistor, a first amplifying circuit and a second amplifying circuit, the first end of the sampling resistor is coupled with the input end of the signal sampling circuit, and the second end of the sampling resistor is coupled with the grounding end; the first input end of the first operational amplifier is coupled with the first end of the sampling resistor, the second input end of the first operational amplifier is coupled with the second end of the sampling resistor, and the output end of the first operational amplifier is coupled with the first output end of the signal sampling circuit; the first input end and the second input end of the second operational amplifier are both coupled with the grounding end, and the output end of the second operational amplifier is coupled with the second output end of the signal sampling circuit. The embodiment of the invention is used for signal sampling and motor control processes.