A 70 GHz Small-signal Bandwidth 40 GS/s Track-and-Hold Amplifier in 130 nm SiGe BiCMOS Technology Wu, Liang Weizel, Maxim Scheytt, Christoph This paper presents a broadband track-and-hold amplifier (THA) based on switched-emitter-follower (SEF) topology. The THA exhibits a record 3dB small-signal bandwidth of 70 GHz. With the high sampling rate of 40 GS/s, it achieves an effective number of bits (ENOB) of 7.5 bit at 1 GHz input frequency and an ENOB of >5 bit up to 15 GHz input frequency. The chip was fabricated in a 130 nm SiGe BiCMOS technology from IHP (SG13G2). It draws 110 mA from a -4 V supply voltage, dissipating 440 mW. 2019 info:eu-repo/semantics/conferenceObject doc-type:conferenceObject text http://purl.org/coar/resource_type/c_5794 https://ris.uni-paderborn.de/record/24052 Wu L, Weizel M, Scheytt C. A 70 GHz Small-signal Bandwidth 40 GS/s Track-and-Hold Amplifier in 130 nm SiGe BiCMOS Technology. In: <i>26th IEEE International Conference on Electronics Circuits and Systems (ICECS)</i>. ; 2019. doi:<a href="https://doi.org/10.1109/ICECS46596.2019.8965046">10.1109/ICECS46596.2019.8965046</a> eng info:eu-repo/semantics/altIdentifier/doi/10.1109/ICECS46596.2019.8965046 info:eu-repo/semantics/closedAccess