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

fYear

2011

fDate

11-14 Dec. 2011

Firstpage

113

Lastpage

116

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICECS.2011.6122227

Filename

6122227