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发表于 2013-9-3 10:24:12
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本帖最后由 朱立平 于 2013-9-3 10:31 编辑
use NWELL (or HR poly, NEWLL resistor has large process variation) as resister care about the matching issue, use active RC circuit lower BW, or only use OP, use double guard ring with/without buttom isolation. |
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