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A 25 GHz analog demultiplexer with a novel track and hold circuit for a 50 GS/s A/D-conversion system in InP DHBT technology

: Ferenci, D.; Grözing, M.; Berroth, M.; Makon, R.E.; Driad, R.; Rosenzweig, J.


Institute of Electrical and Electronics Engineers -IEEE-:
IEEE MTT-S International Microwave Symposium, IMS 2012 : 17-22 June 2012, Montreal, QC, Canada
New York, NY: IEEE, 2012
ISBN: 978-1-4673-1088-8
ISBN: 978-1-4673-1085-7 (Print)
ISBN: 978-1-4673-1086-4 (Online)
ISBN: 978-1-4673-1087-1
3 S.
International Microwave Symposium (IMS) <2012, Montréal>
Fraunhofer IAF ()

A novel architecture of a track and hold (T&H) circuit for the realization of a high speed analog demultiplexer is presented in InP DHBT Technology. The architecture allows a sampling rate flexible demultiplexing of an analog input signal. The demultiplexer features a measured THD above 32 dB and a SFDR above 35 dB with a differential input voltage of 0.5V-PP when operating at 25 GHz. This allows the realization of a 50 GS/s analog-to-digital conversion system.