发明授权
- 专利标题： Ratio correction circuit and method for comparison of proportional to absolute temperature signals to bandgap-based signals
- 专利标题（中）： 比例校正电路和比较绝对温度信号与带隙信号的方法
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申请号： US798518申请日： 1997-02-10
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公开(公告)号： US5933045A公开(公告)日： 1999-08-03
- 发明人: Jonathan Audy , A. Paul Brokaw , Evaldo Miranda , David Thomson
- 申请人： Jonathan Audy , A. Paul Brokaw , Evaldo Miranda , David Thomson
- 申请人地址： MA Norwood
- 专利权人： Analog Devices, Inc.
- 当前专利权人： Analog Devices, Inc.
- 当前专利权人地址： MA Norwood
- 主分类号： G05F3/30
- IPC分类号： G05F3/30 ; G05F1/10 ; G05F3/16
摘要：
A comparison system compares a voltage which is proportional to absolute temperature S.sub.p to one which is equal to the sum of a conventional, uncorrected, bandgap cell voltage VBG and a proportional to absolute temperature voltage CT. The addition of CT to the uncorrected bandgap signal value yields a signal of the form Sp/(VBG+CT), which exhibits improved linearity over a signal of the form Sp/VBG, where VBG includes a Tln(T) term.
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