Title :
A low-noise 40-GS/s continuous-time bandpass /spl Delta//spl Sigma/ ADC centered at 2GHz
Author :
Chalvatzis, Theodoros ; Voinigescu, Sorin P.
Author_Institution :
Edward S. Rogers Sr. Dept. of Electr. & Comput. Eng., Toronto Univ., Ont.
Abstract :
A 2-GHz, continuous-time bandpass DeltaSigma analog-to-digital converter sampled with a 40-GHz clock was implemented in a 130-nm SiGe BiCMOS technology. It achieves an SNDR of 55 dB and 52 dB over 60 MHz and 120 MHz, respectively, and an SFDR of 61 dB with a single-ended IIP3 of +4 dBm. The center frequency is tunable from 1.8-2 GHz. It employs a Gm-LCVAR filter based on a MOS-HBT cascode transconductor with an NFmin of 2.3 dB. The ADC dissipates 1.6 W from a 2.5-V supply with a figure of merit of 18 pJ/sampled bit, including the contribution of the 40-GHz clock distribution network
Keywords :
BiCMOS integrated circuits; Ge-Si alloys; band-pass filters; bipolar integrated circuits; clocks; delta-sigma modulation; millimetre wave filters; 1.6 W; 1.8 to 2 GHz; 120 MHz; 130 nm; 2.3 dB; 2.5 V; 40 GHz; 60 MHz; BiCMOS technology; MOS HBT; SiGe; analog-to-digital converters; bandpass DeltaSigma ADC; cascode transconductor; clock distribution network; continuous time ADC; Analog-digital conversion; BiCMOS integrated circuits; Clocks; Filters; Frequency; Germanium silicon alloys; Noise measurement; Reactive power; Silicon germanium; Transconductors;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2006 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9572-7
DOI :
10.1109/RFIC.2006.1651147
