Title
A 200MS/s, 11 bit SAR-assisted pipeline ADC with bias-enhanced ring amplifier
Abstract
This paper presents an 11bit 200MS/s SAR-assisted pipeline ADC with a 2.5bit front end stage and two time-interleaved 9bit sub-SAR ADCs, implemented in 65nm CMOS process. The bias-enhanced ring amplifier works as the residue amplifier for power efficiency and large signal swing. Two self-biased inverter stages are designed in the ring amplifier to maintain the closed loop stability. The SAR ADCs with custom capacitor arrays are featured by l.5bit acceleration in the second quantization step. With the least-mean-square algorithm calibration, this ADC achieves an ENOB of 9.5bit and a FoM of 15.7fJ/conv-step at a 2.4MHz input signal sampled at 200MHz.
Year
DOI
Venue
2017
10.1109/ISCAS.2017.8050244
2017 IEEE International Symposium on Circuits and Systems (ISCAS)
Keywords
Field
DocType
Pipeline-SAR ADC,bias-enhanced ring amplifier,time-interleaved ADC,accelerated SAR ADC
Electrical efficiency,Front and back ends,Inverter,Capacitor,Computer science,Control theory,Direct-coupled amplifier,Electronic engineering,Effective number of bits,Transistor,Electrical engineering,Amplifier
Conference
ISSN
ISBN
Citations 
0271-4302
978-1-5090-1427-9
0
PageRank 
References 
Authors
0.34
3
5
Name
Order
Citations
PageRank
Yongzhen Chen134.82
Jingjing Wang221.09
Hang Hu323.12
Fan Ye46321.55
Junyan Ren515441.40