发明名称 |
Autonomously calibrated magnetic field sensor |
摘要 |
Magnetic field sensor including a magnetic field sensing circuit (2) comprising a reference magnetic field generator (8) and a magnetic field sensing cell (6), and a signal processing circuit (4) connected to the output of the magnetic field sensing cell and comprising a demodulator circuit and a gain correction feedback circuit (30, 28, 47) for correcting error fluctuations in the transfer characteristic of the magnetic field sensor. The sensor further comprises a reference current generator (3) configured to generate a reference current I ref, the reference current generator connected to the magnetic field sensing circuit (2) configured for generating the reference magnetic field B ref and to the gain correction feedback circuit configured for providing a reference signal ( y ref ) to which an output signal of the demodulator circuit may be compared. |
申请公布号 |
EP2402777(B1) |
申请公布日期 |
2013.01.09 |
申请号 |
EP20100168027 |
申请日期 |
2010.06.30 |
申请人 |
LEM INTELLECTUAL PROPERTY SA |
发明人 |
ANELLI, GIOVANNI MARIA;PASTRE, MARC;AJBL, ANDREA;KAYAL, MAHER |
分类号 |
G01R33/00 |
主分类号 |
G01R33/00 |
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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