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主要是用来抵消 input feed-through,可以看看这篇论文:C. -C. Liu, C. -H. Kuo and Y. -Z. Lin, "A 10 bit 320 MS/s Low-Cost SAR ADC for IEEE 802.11ac Applications in 20 nm CMOS," in IEEE Journal of Solid-State Circuits, vol. 50, no. 11, pp. 2645-2654, Nov. 2015, doi: 10.1109/JSSC.2015.2466475 |
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