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A missing-code-detection gain error calibration achieving 63dB SNR for An 11-bit ADC
Wang G.-C.1; Zhu Y.1; Chan C.-H.1; Seng-Pan U.1; Martins R.P.1
2017-11-02
Conference Name2017 43rd IEEE European Solid State Circuits Conference (ESSCIRC)
Source PublicationESSCIRC 2017 - 43rd IEEE European Solid State Circuits Conference
Pages239-242
Conference DateSEP 11-14, 2017
Conference PlaceLeuven, BELGIUM
Abstract

This paper presents a calibration technique based on missing-code-detection (MCD) scheme to correct the gain error between the MSB and the LSB array in SAR ADCs with bridge-DAC structure. The MCD algorithm replaces the gain factor calculation with simple missing-codes count that significantly reduces the calibration digital overhead. It also relieves the linearity requirement of the testing signal; therefore, a simple charge-pump circuit can be utilized as a testing signal generator (TSG). An 80 MS/s 11-bit SAR ADC with the proposed calibration are integrated together in 65nm CMOS. It does not require any external calibration signal and the measurement results demonstrate that the calibration can improve the SNR of the ADC by 7.3 dB from 55.7 dB to 63 dB at the DC input frequency.

DOI10.1109/ESSCIRC.2017.8094570
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000426841900060
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被引频次[WOS]:2   [WOS记录]     [WOS相关记录]
Document TypeConference paper
专题INSTITUTE OF MICROELECTRONICS
Affiliation1.Universidade de Macau
2.Synopsys Macau Ltd.
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Wang G.-C.,Zhu Y.,Chan C.-H.,et al. A missing-code-detection gain error calibration achieving 63dB SNR for An 11-bit ADC[C],2017:239-242.
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