Conference Paper

A 20 GS/sec Analog-to-Digital Sigma-Delta Modulator in SiGe HBT Technology

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA
DOI: 10.1109/CICC.2006.320909 Conference: Custom Integrated Circuits Conference, 2006. CICC '06. IEEE
Source: IEEE Xplore

ABSTRACT This paper presents a monolithic continuous-time 2nd-order analog-to-digital sigma-delta modulator implemented in third-generation, 200 GHz SiGe HBT technology. The modulator can operate at a sampling rate of 20 GS/sec with SNRs of 30.5 dB over a signal band from DC to 312.5 MHz, and 51 dB over 1 MHz bandwidth. Operating off a +3.5 V power supply, the modulator dissipates a total of 490 mW. The die occupies an area of 1.58 times 1.7 mm2

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