发明申请
- 专利标题: Impedance-matched write circuit with shunted matching resistor
- 专利标题(中): 具有分流匹配电阻的阻抗匹配写电路
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申请号: US10776701申请日: 2004-02-11
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公开(公告)号: US20050174668A1公开(公告)日: 2005-08-11
- 发明人: Hao Fang , Cameron Rabe
- 申请人: Hao Fang , Cameron Rabe
- 主分类号: G11B5/00
- IPC分类号: G11B5/00 ; G11B5/012 ; G11B5/09
摘要:
An impedance matched write circuit is provided that shunts one or more matching resistors. The impedance matched write circuit includes an interconnect for connecting to a write head and at least one resistor between a control voltage and the interconnect for impedance matching to the interconnect. A transistor can be connected across the resistor to shunt current that would otherwise pass through the resistor during an overshoot mode. The transistor may be a PMOS transistor or a combination of PMOS and NMOS transistors. A gate voltage of the transistor is controlled by a source such that the transistor is turned on in an overshoot mode and turned off during a steady state mode.
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