Matched-Routing Common-Centroid 3-D MOM Capacitors for Low-Power Data Converters

Chou, Pang-Yen; Chen, Nai-Chen; Graeb, Helmut

doi:10.1109/tvlsi.2017.2687980

Cited by 6 publications

(1 citation statement)

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“…MOM capacitors also take advantage of lateral electrical fields to achieve smaller area and generally larger capacitance density. In order to achieve such capacitance density, smaller parasitic capacitance and higher speed, in [7,8,9,10,11,12], MOM capacitance is used as a weighted capacitor array. In order to reduce the error introduced by weight capacitor mismatch, more and more SAR ADCs use non-binary capacitor arrays to provide redundancy for correction errors [4,7,8,9,10,13,14].…”

Section: Introductionmentioning

confidence: 99%

A lateral field non-binary split weighted capacitor array based on fractal curve for SAR ADC

Zhao

Zhang

Wenxin

2020

IEICE Electron. Express

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A non-binary split-type MOM weighted capacitor array based on fractal geometry for SAR (Successive Approximation Register) ADC is proposed. By taking advantage of the geometric characteristics of the Hilbert curve, the capacitor array avoids the use of complex commoncentroid structure and complex wiring. The test results of the SAR ADC using this capacitor array show that, the measured DNL and INL were −0.26/0.38 LSBs and −0.37/0.38 LSBs, respectively. The ENOB is 8.66 bits. The SAR ADC was implemented using a 180-nm CMOS process with a supply voltage of 1.8 V. Its active area and power consumption are 330 µm × 1190 µm and 1.89 mW, respectively.

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