发明名称 |
LOGARITHMIC ANALOG/DIGITAL CONVERSION METHOD FOR AN ANALOG INPUT SIGNAL, AND CORRESPONDING DEVICE |
摘要 |
A logarithmic analog to digital conversion method for an analog input signal includes a logarithmic amplification with progressive compression of the input signal delivering a sequence of several secondary analog signals. The trend of the values of at least some of the secondary signals is a function of the values of the analog input signal including regions corresponding to a linear trend of the secondary signals as a function of that of the input signal expressed in a logarithmic scale. The method also includes a comparison of at least some of the secondary signals of the sequence with a common reference signal whose value lies within each of regions, supplying a thermometric code information item, and a generation of a first digital word from the thermometric code information item.
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申请公布号 |
US2011205093(A1) |
申请公布日期 |
2011.08.25 |
申请号 |
US201113032115 |
申请日期 |
2011.02.22 |
申请人 |
STMICROEIECTRONICS SA;CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) |
发明人 |
GORISSE JEAN;CATHELIN ANDREIA;KAISER ANDREAS;KERHERVE ERIC |
分类号 |
H03M1/10;H03M1/34 |
主分类号 |
H03M1/10 |
代理机构 |
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主权项 |
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地址 |
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