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Capacitance Area Mismatch

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One method is to measure capacitance mismatch with a help of additional resistor dac in area where DNL (mismatch) is critical. For binary weighted DAC fiirst at crossing 0111..111 to 1000...000 Then at crossing 001111... 111 to 0111...111 and so on for the first 4-6 bits... Results shoud be stored into a RAM and in normal (...)