An integrated 12 Gbps switch-mode driver MMIC with 5 VPP for digital transmitters in 100 nm GaN technology

A digital switch-mode amplifier MMIC integrating an differential amplifier and driver was realized in an 100 nm GaN technology with a transit frequency of 80 GHz. The circuit operates up to a bit rate of 12 Gbps while it was designed for a current-mode amplifier chain. Each of the two driver output...

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Bibliographic Details
Published in2012 7th European Microwave Integrated Circuit Conference pp. 115 - 118
Main Authors Maroldt, S., Brueckner, P., Quay, R., Ambacher, O., Maier, S., Wiegner, D., Pascht, A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2012
Subjects
Differential amplifiers
Gallium nitride
Limiting
MMICs
Power amplifiers
Switches
Transmitters
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Summary:A digital switch-mode amplifier MMIC integrating an differential amplifier and driver was realized in an 100 nm GaN technology with a transit frequency of 80 GHz. The circuit operates up to a bit rate of 12 Gbps while it was designed for a current-mode amplifier chain. Each of the two driver output channels delivers an adjustable output voltage swing of up to 5 V PP . Due to the differential amplifier input stage with a very low minimum input voltage swing of 0.5 V PP the MMIC allows a flexible operation used as limiting amplifier or digital pre-amplifier for a GaN final switch-mode stage. The high output power density of the GaN technology allows a further integration of the final switch-mode power amplifier stage which enables for the first time a fully integrated high power digital transmitter in GaN.
ISBN:9781467323024
1467323020