公开(公告)号：US20170005442A1

公开(公告)日：2017-01-05

申请号：US15172877

申请日：2016-06-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： HYUNGDONG ROH ,  MYUNG-JIN LEE ,  YONGHEE LEE

IPC: H01R13/66 ,  H01R13/64

CPC classification number: H04R5/04 ,  H01R24/58 ,  H01R2107/00 ,  H04R1/1041 ,  H04R29/00 ,  H04R2420/03

Abstract: Disclosed is an audio device including an audio codec circuit connected to a first channel electrode, a second channel electrode, and a microphone detection electrode, and a jack detection circuit connected to a first channel detection electrode, a ground detection electrode, and the microphone detection electrode, and, in response to voltages of the first channel detection electrode and the ground detection electrode corresponding to a ground voltage, the jack detection circuit detects insertion of a jack, applies the ground voltage to the ground detection electrode, and applies a bias voltage to the microphone detection electrode.

Abstract translation: 公开了一种音频装置，包括连接到第一通道电极，第二通道电极和麦克风检测电极的音频编解码电路，以及连接到第一通道检测电极，接地检测电极和麦克风检测的插座检测电路 电极，并且响应于与接地电压对应的第一沟道检测电极和接地检测电极的电压，插座检测电路检测插座的插入，将接地电压施加到接地检测电极，并施加偏置电压 到麦克风检测电极。

公开(公告)号：US20240267008A1

公开(公告)日：2024-08-08

申请号：US18525479

申请日：2023-11-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： INHWAN CHO ,  MYUNG-JIN LEE

IPC: H03F3/217 ,  H03F3/45

CPC classification number: H03F3/2171 ,  H03F3/45475 ,  H03F2200/03 ,  H03F2200/351 ,  H03F2203/45424 ,  H03F2203/45434

Abstract: An audio amplifier includes a loop filter configured to receive a differential input signal pair, a pulse-width modulation (PWM) signal generator configured to generate PWM signals, corresponding to the differential input signal pair, based on signals received from the loop filter, a driver configured to generate an output signal pair based on the PWM signals, a feedback circuit configured to feed back the output signal pair to the loop filter, and a common mode compensation circuit configured to compensate for a fluctuation in a common mode voltage of the fed-back output signal pair. The common mode compensation circuit generates a compensation voltage for each of a plurality of levels of the common mode voltage, and provides the generated compensation voltage to the loop filter.