Title :
A 10b 100kS/s SAR ADC with charge recycling switching method
Author :
Kai-Hsiang Chiang ; Soon-Jyh Chang ; Guan-Ying Huang ; Ying-Zu Lin
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
This paper presents a low-voltage and energy-efficient 10b SAR ADC which manipulates charge recycling switching method for saving the switching energy. In additional, a window-based reconfigurable comparator is used to achieve fast comparison and small power dissipation. The proposed 10b SAR ADC operates at 100kS/s with 0.4V supply voltage in 90nm CMOS. The measurement results show that the prototype ADC achieve 55.37dB SNDR at Nyquist rate with only 107nW. The Figure-of-Merit (FoM) is 2.23fJ/conv.-step.
Keywords :
CMOS digital integrated circuits; Nyquist criterion; analogue-digital conversion; comparators (circuits); switching convertors; CMOS; FoM; Nyquist rate; SAR ADC; charge recycling switching method; figure-of-merit; power 107 nW; power dissipation; size 90 nm; switching energy; voltage 0.4 V; window-based reconfigurable comparator; CMOS integrated circuits; Capacitors; Linearity; Power demand; Recycling; Signal to noise ratio; Switches;
Conference_Titel :
Solid-State Circuits Conference (A-SSCC), 2014 IEEE Asian
Conference_Location :
KaoHsiung
Print_ISBN :
978-1-4799-4090-5
DOI :
10.1109/ASSCC.2014.7008927
