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5 Gsample/s track-hold and 3 Gsample/s quasi-sample-hold ICs



Wuorinen, J.H.; Shaw, R.E.; Olivari, B. ; Institute of Electrical and Electronics Engineers -IEEE-:
IEEE International Solid-State Circuits Conference 1998. Digest of technical papers
New York: IEEE, 1998
ISBN: 0-7803-4344-1
S.328-329, 458 : Ill.
International Solid-State Circuits Conference (ISSCC) <45, 1998, San Francisco/Calif.>
Fraunhofer IAF ()
Analogschaltung; analogue circuit; Folge-Halte-Schaltung; GaAs HEMT; track-hold

Two fully-differential track-and-hold and quasi-sample-and-hold circuits are based on AlGaAs/GaAs-HEMTs with 6OGHz fT. The less complex of these circuits exhibits 7b linearity measured under worst case. The ICs work up to 5GSample/s at a differential input of 2Vp-p for the track-and-hold and 3GSample/s for the quasi-sample-and-hold. The THA can be directly merged with the source follower input stage of an A/D converter and is also suitable for Si bipolar technology.