IC chip type hearing aid circuit for a mobile phone and Mobile phone with a built-in hearing aid circuit

摘要

The present invention relates to a listening assistant circuit of a mobile communication terminal implemented in the form of an IC chip, and a mobile communication terminal including the same. A resistive element R1 connected in series on a first output line Receiver_P between a mobile communication terminal and an ear speaker. ) And a first series connector consisting of an inductive element (L1); A second series connector including a resistive element R3 and an inductive element L2 connected in series on a second output line Receiver_N between the mobile communication terminal and the ear speaker; A third series connector including a resistive element (R2) and a capacitive element (C2) connected in series between an input terminal of the first series connector and an output terminal of the second series connector; A hearing impaired person may be configured by including a fourth series connection including a resistive element R4 and a capacitive element C3 connected in series between an input end of the second series connection and an output end of the first series connection. The listening assistant circuit which can listen to the audio signal from the mobile communication terminal can be implemented in the form of an IC chip, so that it is easy to apply to the mobile communication terminal, and it is advantageous to reduce the size and weight of the mobile communication terminal.;Mobile Terminal, Hearing Aid Circuit