Title :
A 2-GS/s 0.35μm SiGe track-and-hold amplifier with 7-GHz analog bandwidth using a novel input buffer
Author :
Cascella, Damiano ; Avitabile, Gianfranco ; Cannone, Francesco ; Coviello, Giuseppe
Author_Institution :
Dipt. di Elettrotec. ed Elettron., Politec. di Bari, Bari, Italy
Abstract :
In this paper a Track-and-Hold amplifier (THA), designed in a low cost 0.35μm SiGe 60GHz technology, suitable for SDR applications, is presented. With the implementation of a novel input buffer, the circuit shows a 3dB bandwidth of 7GHz and a distortion better than 50dB up to, about, that frequency during Track phase. Simulations show a THD better than 50dB up to a frequency of 5.77GHz at 2GS/s and a “reconstructed” 3dB full power bandwidth (FPBW) of 5.86GHz. The circuit draws about 220mA from 3.3V supply, considering all the sampling stage, the output buffer and clock driver.
Keywords :
BiCMOS analogue integrated circuits; Ge-Si alloys; MMIC amplifiers; buffer circuits; clocks; field effect MIMIC; field effect MMIC; harmonic distortion; millimetre wave amplifiers; sample and hold circuits; software radio; BiCMOS technology; SDR application; SiGe; THA; THD; bandwidth 5.86 GHz; bandwidth 7 GHz; clock driver; frequency 5.77 GHz; frequency 60 GHz; gain 3 dB; input buffer; size 0.35 mum; track-and-hold amplifier; voltage 3.3 V; Bandwidth; BiCMOS integrated circuits; Clocks; Integrated circuit modeling; Linearity; Resistors; Silicon germanium;
Conference_Titel :
Electronics, Circuits and Systems (ICECS), 2011 18th IEEE International Conference on
Conference_Location :
Beirut
Print_ISBN :
978-1-4577-1845-8
Electronic_ISBN :
978-1-4577-1844-1
DOI :
10.1109/ICECS.2011.6122227
