Title :
A 72dB-SNDR rail-to-rail successive approximation ADC
Author :
Liu Yan ; Xue Zhiyuan ; Li Quanquan ; Hua Siliang ; Wang Donghui
Author_Institution :
Inst. of Acoust., Beijing, China
fDate :
Oct. 29 2012-Nov. 1 2012
Abstract :
When the voltage of analog input signal equals to supply voltage, the general successive approximation ADC is difficult to convert it into digital signal correctly. So this paper introduces a new successive approximation ADC which can convert rail-to-rail input range and reduce sampling time through a track-and-hold circuit. Measurement results show that the peak SNDR of this ADC reaches 72dB and signal effective bandwidth up to 1.25MHz. It consumes 1mW in the test, corresponding to a figure of merit of 123fJ/conversion-step.
Keywords :
analogue-digital conversion; sample and hold circuits; SNDR rail-to-rail successive approximation; analog input signal; digital signal; general successive approximation ADC; power 1 mW; rail-to-rail input range; sampling time; supply voltage; track-and-hold circuit; Approximation methods; Arrays; Capacitance; Capacitors; Equations; Rail to rail amplifiers; Switches;
Conference_Titel :
Solid-State and Integrated Circuit Technology (ICSICT), 2012 IEEE 11th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4673-2474-8
DOI :
10.1109/ICSICT.2012.6467887
