@inproceedings{790c87fce27f4a4191157a421b230fe6,

title = "A fourth-order feedforward continuous-time delta-sigma ADC with 3MHz bandwidth",

abstract = "A fourth-order feedforward continuous-time (CT) delta-sigma modulator is presented. The modulator takes an active-RC OpAmp as the first stage because of the high-linearity requirement, and the other three stages are composed by Gm-C integrators. In feedforward topology, a higher out-of-band NTF gain could be taken for better performance. As we know, the most important part in the feedforward CT ΔΣ modulator is the summation circuit for the feedforward paths. The modulator uses a tuning adder, which we propose, to make sure the modulator can work correctly even under the influence of the process variation on resistors. Finally, the delta-sigma modulator is implemented in standard digital 0.18-μm CMOS process, which achieves 57.84 dB SNDR over a 3MHz signal bandwidth at an OSR of 16.67. The power consumption of the CT delta-sigma modulator is 11.8 mW from the 1.8-V supply.",

keywords = "Continuous-time, Delta-sigma, Modulator",

author = "Huang, {Sheng Wen} and Chen, {Zong Yi} and Chung-Chih Hung and Chen, {Chia Min}",

year = "2010",

doi = "10.1109/MWSCAS.2010.5548554",

language = "English",

isbn = "9781424477715",

series = "Midwest Symposium on Circuits and Systems",

pages = "33--36",

booktitle = "2010 IEEE International 53rd Midwest Symposium on Circuits and Systems, MWSCAS 2010",

note = "53rd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2010 ; Conference date: 01-08-2010 Through 04-08-2010",

}