Earphone interface circuit and electronic equipment

The invention discloses an earphone interface circuit and electronic equipment, and belongs to the technical field of electronics. The specific scheme comprises a microphone, a filtering module and a loudspeaker, the microphone comprises an output port, a power port and a first grounding port; the filtering module comprises a first port, a second port and a third port; the loudspeaker comprises an input port and a second grounding port; the output port is connected with a microphone pin of an earphone, the power port is connected with the first port, the second port is connected with the input port, the third port is connected with a target sound channel pin of the earphone, and the first grounding port and the second grounding port are connected with a grounding pin of the earphone; and the filtering module is used for filtering an alternating current signal transmitted from the target sound channel pin to the power supply port and filtering a direct current signal transmitted from the target sound channel p