发明名称 |
Write driver with power optimization and interconnect impedance matching |
摘要 |
A write driver for driving a write current through a write head connected to the write head by an interconnect or flexible transmission line. The write driver includes a circuit matching an output impedance of the write driver to the odd characteristic impedance of the interconnect and includes a current source generating a current output to the write head. The write driver provides a current amplification effect as the output current is half the write current driven through the write coil. The impedance matching circuit includes an output resistor with a resistance equal to the odd characteristic impedance of the interconnect. The write driver includes a voltage source that operates to maintain a voltage drop of zero on the output resistor during the initial period of twice the transmission delay of the interconnect.
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申请公布号 |
US2005231843(A1) |
申请公布日期 |
2005.10.20 |
申请号 |
US20040824096 |
申请日期 |
2004.04.14 |
申请人 |
VENCA ALESSANDRO;ALINI ROBERTO;POSAT BARIS |
发明人 |
VENCA ALESSANDRO;ALINI ROBERTO;POSAT BARIS |
分类号 |
G11B5/09;G05F3/26;G11B5/02;H04L25/02;(IPC1-7):G11B5/09 |
主分类号 |
G11B5/09 |
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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