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\begin{document}

\title{A Capacitive Mismatch Calibration Method for SAR ADCs Based on TDC}



\author[1]{Qing Shen}%
\author[1]{mei Jiang}%
\author[1]{Junxian Chen}%
\author[1]{Xinhui He}%
\author[1]{Xin Wang}%
\affil[1]{Shenzhen University}%


\vspace{-1em}



  
  \date{May 27, 2024}


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\begin{abstract}
The capacitance mismatch problem limits the accuracy improvement of
high-precision SAR ADCs (Successive Approximation Register
Analog-to-Digital Converters). To address the capacitance array mismatch
in SAR ADCs, this paper proposes a novel capacitor calibration scheme
based on the Time-to-Digital Converter (TDC). This scheme achieves
calibration accuracy as high as 0.01\textbackslash{}\% and can be
flexibly designed to meet the accuracy requirements of SAR ADCs.
Simulation results indicate that the capacitance mismatch issue of a
redundant capacitor 13-bit SAR ADC can be completely eliminated, and the
effective number of bits (ENOB) can approach the ideal value of 13.18
bits. Additionally, the analog component of this scheme utilizes four
inverter chains, two D flip-flops, and four counters, without requiring
a large area for auxiliary calibration capacitors.%
\end{abstract}%



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\textbf{Hosted file}

\verb`A Capacitive Mismatch Calibration Method for SAR ADCs Based on TDC--latex file.rar`  available at \url{https://authorea.com/users/664497/articles/666257-a-capacitive-mismatch-calibration-method-for-sar-adcs-based-on-tdc}

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