发明名称 Composite output stage for hard disk drive preamplifier
摘要 An apparatus for supplying a load current. The apparatus comprises a first differential amplifier producing a differential output signal and an output buffer comprising a first and a second parallel emitter follower transistors each producing a current responsive to the differential output signal. A second differential amplifier responsive to the differential output signal controls current mirror masters that in turn control current source mirrors. Current supplied by each of the current sources mirrors in cooperation with the current produced by each of the first and second transistors produce the load current.
申请公布号 GB0520264(D0) 申请公布日期 2005.11.16
申请号 GB20050020264 申请日期 2005.10.05
申请人 AGERE SYSTEMS INC 发明人
分类号 G11B5/02 主分类号 G11B5/02
代理机构 代理人
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