Title :
A 150 MHz 13b 12.5 mW IF digitizer
Author :
Sen, Subhajit ; Leung, Bosco
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada
Abstract :
A sub-sampling IF digitizer that uses a passive sampling mixer to improve distortion and a BiCMOS comparator to improve the SNR of a passive loop-filter based ΣΔ converter is described. Volterra series analysis allows accurate prediction of distortion in the sampling mixer. A bipolar emitter-coupled pair based preamplifier in the comparator helps to relax overdrive recovery requirements of the regenerative latch and improve the speed of the comparator
Keywords :
BiCMOS integrated circuits; Volterra series; comparators (circuits); electric distortion; integrated circuit noise; mixers (circuits); network analysis; sigma-delta modulation; signal sampling; 12.5 mW; 150 MHz; BiCMOS comparator; SNR improvement; Volterra series analysis; bipolar emitter-coupled pair based preamplifier; distortion improvement; overdrive recovery requirements; passive loop-filter based ΣΔ converter; passive sampling mixer; regenerative latch; sigma-delta converter; sub-sampling IF digitizer; Circuits; Complexity theory; Convolution; Frequency conversion; Mixers; Nonlinear distortion; Power engineering and energy; Power engineering computing; Sampling methods; Signal resolution;
Conference_Titel :
Custom Integrated Circuits Conference, 1998. Proceedings of the IEEE 1998
Conference_Location :
Santa Clara, CA
Print_ISBN :
0-7803-4292-5
DOI :
10.1109/CICC.1998.694970
