发明名称 |
Active trim circuit for CMOS on-chip resistors |
摘要 |
A resistance circuit includes an off-chip resistor having a precision resistance; a plurality of on-chip switchable resistors, each of which is capable being switched so as to be coupled in parallel to a nominal resistor; and a resistance comparison unit. The resistance comparison unit compares a plurality of on-chip comparison resistors to the off-chip resistor and couples a number of the on-chip switchable resistors to the nominal resistor so that the combined resistance of the parallel combination of the nominal resistor and the coupled on-chip switchable resistors is within a predetermined range of the precision resistance.
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申请公布号 |
US6504417(B1) |
申请公布日期 |
2003.01.07 |
申请号 |
US20010930670 |
申请日期 |
2001.08.15 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
CECCHI DELBERT R.;HANSON CHARLES C.;PREUSS CURTIS W. |
分类号 |
H01L27/08;(IPC1-7):H03L5/00 |
主分类号 |
H01L27/08 |
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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