A low-power, 10GS/s track-and-hold amplifier in SiGe BiCMOS technology

This paper presents a low-power high-speed BiCMOS track-and-hold amplifier (THA). It combines the differential switched-emitter follower of (Vorenkamp and Verdaasdonk, 1992) with the low-droop output buffer presented in (Fiocchi et al., 2000). A test implementation consumes 70 mW of total power (30...

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Bibliographic Details
Main Authors: Borokhovych, Y., Gustat, H., Tillack, B., Heinemann, B., Yuan Lu, Kuo, W.-M.L., Xiangtao Li, Krithivasan, R., Cressler, J.D.
Format: Conference Proceeding
Language:English
Subjects:
Analog-digital conversion
Baseband
BiCMOS integrated circuits
Circuit synthesis
Circuit testing
CMOS technology
Communications technology
Energy consumption
Germanium silicon alloys
Silicon germanium
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Summary:This paper presents a low-power high-speed BiCMOS track-and-hold amplifier (THA). It combines the differential switched-emitter follower of (Vorenkamp and Verdaasdonk, 1992) with the low-droop output buffer presented in (Fiocchi et al., 2000). A test implementation consumes 70 mW of total power (30 mW THA). It works up to 15 GS/s, using minimum-size HBTs in a 0.25/spl mu/m 200 GHz SiGe BiCMOS technology. At 10 GS/s and an input signal of 1 GHz, the achieved THD corresponds to 6.8 bits accuracy. To our knowledge, the present circuit is by far the fastest THA with low power consumption and high accuracy.
ISSN:1930-8833
2643-1319
DOI:10.1109/ESSCIR.2005.1541610