发明名称 |
Apparatus for automatic measurement of resistance of integrated MR device |
摘要 |
A device for measuring the resistance of an MR element which passes a bias current Imr and which derives a bias voltage. A voltage comparator CMP receives the bias voltage Vmr and a reference voltage Vref. A counter UPCNT has an enable input EN coupled to the output of the comparator and a digital output forming the output of the device. A current source supplies the bias current Imr which represents a digital value received by the current source at its control input which is coupled to the digital output of the counter. The device enables the digital value of a resistance to be measured automatically.
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申请公布号 |
US6225802(B1) |
申请公布日期 |
2001.05.01 |
申请号 |
US19990356596 |
申请日期 |
1999.07.19 |
申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
RAMALHO JOAO N. V. L.;DE JONG GERBEN W.;RAMAEKERS JOZEF A. M.;PIERAERTS ERIC |
分类号 |
G06K7/08;G01R27/02;G01R27/14;G01R33/09;G11B5/00;G11B5/012;G11B5/02;G11B5/40;G11B5/455;G11B19/04;(IPC1-7):G01B7/14 |
主分类号 |
G06K7/08 |
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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