期刊
IEEE 45TH EUROPEAN SOLID STATE CIRCUITS CONFERENCE (ESSCIRC 2019)
卷 -, 期 -, 页码 189-+出版社
IEEE
DOI: 10.1109/esscirc.2019.8902873
关键词
-
资金
- Natural Science Foundation of China [61774047]
The paper presents a machine-learning based calibration scheme for split pipelined-SAR ADCs with open-loop residual amplifiers. Different from conventional methods, the proposed scheme is prior-knowledge-free. The scheme adopts a two-layer neural network, and directly uses the bit-wise comparator results as inputs. The neural network compensates the distortion and can be compressed by 75% due to the network's sparsity. A 14-bit 60-MSps split pipelined-SAR ADC with gain boosted dynamic amplifiers is fabricated in 28nm CMOS to validate the scheme. The measurement results show the ADC achieves an SFDR of 93.7 dB and an ENOB of 10.7b, consuming 2.79 To the authors' knowledge, it achieves the best SFDR among Nyquist ADCs with open-loop amplifiers.
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