Impact of switches resistance on successive approximation of ADC dynamic performance

2nd International Telecommunication Conference "Advanced Micro- and Nanoelectronic Systems and Technologies"

Bocharov, Y.^1 ; Butuzov, V.^1^3 ; Shunkov, V.^3 ; Kus, O.^2 ; Prokopyev, V.^2

National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, Kashirskoe shosse 31, Moscow

115409, Russia^1

OKB Fifth Generation, LLC, Nikolaeva street 11, Novosibirsk

630090, Russia^2

Megarad, LLC, Nikolaeva street 11, Novosibirsk

630090, Russia^3

关键词: Dynamic performance;    Micro Power;    SAR ADC;    Successive approximation analog-to-digital converters;    Successive approximations;    Switched capacitor;    Switched capacitor array;    Voltage reference;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/498/1/012005/pdf
DOI  :  10.1088/1757-899X/498/1/012005

来源: IOP

【 摘 要 】

This paper discusses the degradation of the dynamic performance in switched capacitors based on successive approximation analog-to-digital converters (SAR ADCs), caused by the resistance of the switch, which connects a voltage reference to a common bus of switched capacitor array. Based on the analysis of the phenomenon, the techniques for reducing its influence are shown. They were used in the design of micro-power SAR ADC, which is presented in the paper.