发明名称 |
Circuit and method of reducing pop-up noise in a digital amplifier |
摘要 |
A circuit of reducing a pop-up noise in a digital amplifier includes a switch unit and a switch signal generator. The switch unit is coupled in parallel to an output load between an output node of the digital amplifier and a reference node. The switch unit controls a current flowing through the output load by forming a conduction path between the output node and the reference node in response to a switch signal. The switch signal generator generates the switch signal in response to a switch control signal indicating a power-on or a power-off. The pop-up noise is reduced by the conduction path that is formed when the digital amplifier is powered on or off. |
申请公布号 |
US8284953(B2) |
申请公布日期 |
2012.10.09 |
申请号 |
US20070873179 |
申请日期 |
2007.10.16 |
申请人 |
LEE SOO-HYOUNG;YEUM WANG-SEUP;CHO YONG-JIN;LEE IN-BOCK;SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
LEE SOO-HYOUNG;YEUM WANG-SEUP;CHO YONG-JIN;LEE IN-BOCK |
分类号 |
H04B15/00;H02B1/00;H03F1/14;H03F3/38;H03G11/00;H04R29/00 |
主分类号 |
H04B15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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