Title :
An 8-bit 1-GS/s flash-assisted time-interleaved SAR ADC
Author :
Jixuan Xiang ; Huabin Chen ; Chixiao Chen ; Fan Ye ; Jun Xu ; Junyan Ren
Author_Institution :
State Key Lab. of ASIC & Syst., Fudan Univ., Shanghai, China
Abstract :
This paper presents an 8-bit 1GS/s flash-assisted time-interleaved SAR ADC consisting of one 2-bit flash ADC and one 6-bit SAR ADC with 4 time-interleaved channels. The hybrid capacitive DAC controls segmented thermometer MSB capacitors and the binary LSBs. This architecture improves speed significantly with 1GHz sampling rates. This work realizes the ENOB with 7.93-bit, consumes power of 4.86 mW from a 1.2-V supply voltage in 65-nm process and achieves FoMs to 19.9 and 24.7 fJ/conversion-step at low and nyquist input, respectively.
Keywords :
analogue-digital conversion; digital-analogue conversion; 4 time-interleaved channels; binary LSBs; flash-assisted time-interleaved SAR ADC; frequency 1 GHz; hybrid capacitive DAC controls; power 4.86 mW; size 65 nm; thermometer MSB capacitors; voltage 1.2 V; word length 2 bit; word length 6 bit; word length 8 bit; Abstracts;
Conference_Titel :
Solid-State and Integrated Circuit Technology (ICSICT), 2014 12th IEEE International Conference on
Conference_Location :
Guilin
Print_ISBN :
978-1-4799-3296-2
DOI :
10.1109/ICSICT.2014.7021243
