Title
A Latency-Optimized Lookup Table for Nonlinearity Calibration in VCO-Based Sigma-Delta ADCs
Abstract
The long latency feature of the conventional lookup tables (LUTs) puts a limit on their applications in a VCO-based continuous-time sigma-delta (CTSD) analog-to-digital converter (ADC). In this paper, a latency-optimized scheme is proposed to break this limitation. The search process of the LUT is achieved by a multi-step procedure to calculate the number of '1' in the address code with low latency. The LUT is designed in a 180-nm CMOS process. Compared to a conventional implementation, the latency can be reduced by 25% with the proposed technique.
Year
DOI
Venue
2021
10.1109/MWSCAS47672.2021.9531839
2021 IEEE INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS)
Keywords
DocType
ISSN
LUT, nonlinearity calibration, VCO-based CTSD
Conference
1548-3746
Citations 
PageRank 
References 
0
0.34
0
Authors
4
Name
Order
Citations
PageRank
Yanlin He100.34
Yuekang Guo223.40
Jing Jin335.49
JianJun Zhou405.07