发明授权
- 专利标题： Closed loop ramp up for pop and click reduction in an amplifier
- 专利标题（中）： 闭环加速放大器中的弹出和点击减少
-
申请号： US12358640申请日： 2009-01-23
-
公开(公告)号： US07777574B1公开(公告)日： 2010-08-17
- 发明人: Allan Nogueras Nielsen
- 申请人： Allan Nogueras Nielsen
- 申请人地址： US TX Dallas
- 专利权人： Texas Instruments Incorporated
- 当前专利权人： Texas Instruments Incorporated
- 当前专利权人地址： US TX Dallas
- 代理商 John J. Patti; Wade J. Brady, III; Frederick J. Telecky, Jr.
- 主分类号： H03F3/04
- IPC分类号： H03F3/04
摘要：
To reduce pop or click during turn-on, a method and apparatus are provided. Initially, a plurality of current sources in the amplifier is actuated. The amplifier is transitioned from an off-state to an on-state in a class B amplifier mode by de-coupling each input node of an output stage of the amplifier from a voltage rail, and the amplifier is transitioned from the on-state in the class B amplifier mode to an on-state in a class AB amplifier mode by actuating at least a portion of an intermediate circuit in the amplifier.
公开/授权文献
信息查询
