Patent ID: 11968503
Assignee: SHANGHAI AWINIC TECHNOLOGY CO., LTD.
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A current detection circuit for protecting a speaker, comprising: a current detection module and an analog-to-digital converter, wherein
a first input terminal of the current detection module is connected to a first speaker output terminal, a second input terminal of the current detection module is connected to a second speaker output terminal, and the current detection module is configured to sample a current flowing through the speaker and convert the sampled current into a voltage, to output a first voltage signal and a second voltage signal; and
a first input terminal of the analog-to-digital converter is connected to a first output terminal of the current detection module, a second input terminal of the analog-to-digital converter is connected to a second output terminal of the current detection module, and the analog-to-digital converter is configured to convert the first voltage signal and the second voltage signal into a pulse-density modulation (PDM) code, to calculate a current parameter of the speaker.