| 摘要 |
A successive-approximation A/D converter includes a reference voltage generator configured to generate a reference voltage, a comparator configured to receive an input analog signal and generate a voltage difference by comparing the input analog signal and the reference voltage, an error-correction circuit including a variable capacitor configured to correct the voltage difference based on a capacitance of the variable capacitor, an error-correction controller configured to retrieve from memory a correction amount and control the error-correction circuit to vary the capacitance of the variable capacitor according to the correction amount, and a successive approximation register logic circuit configured to generate an output digital signal based on the voltage difference from the comparator.
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