发明名称 |
Negative feedback impedance matched preamplifier |
摘要 |
A preamplifier system is provided for connection through an interconnect to a read head. The interconnect has a characteristic impedance associated therewith. The preamplifier system includes an amplifier circuit having an input for connection to the interconnect. The amplifier circuit amplifies an input signal carried from the read head through the interconnect, yielding an amplified input output signal. A feedback resistance is connected between the amplified output signal and the input of the amplifier circuit. The feedback resistance has a value selected to provide an effective input impedance of the preamplifier system to match the characteristic impedance of the interconnect.
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申请公布号 |
US2002154435(A1) |
申请公布日期 |
2002.10.24 |
申请号 |
US20010797316 |
申请日期 |
2001.03.01 |
申请人 |
AGERE SYSTEMS GUARDIAN CORP. |
发明人 |
COMEAU JOHNATHAN P.;MALKA RONEN;FITZGERALD DAVID J.;DOHERTY SALLY A. |
分类号 |
G11B5/012;G11B5/02;G11B5/39;(IPC1-7):G11B5/02 |
主分类号 |
G11B5/012 |
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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