A 40GS/s Track-and-Hold amplifier with 62dB SFDR3 in 45nm CMOS SOI

Microwave Symposium（2014）

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Abstract

A 40GS/s Track-and-Hold amplifier with active cancellation capability is presented to mitigate the effect of leakage in transmission gate during the holding mode. A single-ended RF input signal is converted to a differential signal that feeds the active cancellation network. A record SFDR3 of 62dB with 40GS/s and 5GHz input frequency is reported in 45nm CMOS SOI. A droop voltage of 20μv/ns is measured. An isolation of 32dB at 1GHz between the holding and tracking modes is recorded.

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Key words

cmos analogue integrated circuits,differential amplifiers,sample and hold circuits,silicon-on-insulator,cmos soi,active cancellation capability,differential signal,holding mode,single ended rf input signal,size 45 nm,track-and-hold amplifier,transmission gate leakage,adc,active cancellation,cmos,sfdr,soi,silicon,track and hold amplifier,time frequency analysis,logic gates,cmos integrated circuits,oscilloscopes,generators,radio frequency,silicon on insulator

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