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|Title:||A 10-Gb/s inductor-less variable gain amplifier with a linear-in-dB characteristic and DC-offset cancellation||Authors:||Liu, Chang
Goh, Wang Ling
|Keywords:||DRNTU::Engineering::Electrical and electronic engineering::Semiconductors||Issue Date:||2012||Source:||Liu, C., Yan, Y., Goh, W. L., Xiong, Y., Zhang, L., & Madihian, M. (2012). A 10-Gb/s inductor-less variable gain amplifier with a linear-in-dB characteristic and DC-offset cancellation. Journal of semiconductors, 33(8), 085003-.||Series/Report no.:||Journal of semiconductors||Abstract:||This paper presents a broadband inductor-less variable gain amplifier (VGA) with a linear-in-dB gain control characteristic and DC-offset cancellation. The proposed VGA is composed of a variable gain block, an exponential voltage generator, a DC-offset canceller with common-mode voltage correction, and a gain peaking block. To achieve the broad band and reduce the chip area, the gain peaking block employs an inductor-less gain peaking scheme to compensate the high frequency gain drop of the variable gain block and the DC-offset canceller. The VGA fabricated in 0.13 μm SiGe BiCMOS technology achieves a 3-dB bandwidth of 7.5 GHz and a variable gain range from −10 to 30 dB. Due to the inductor-less design, the die area is only 0.53 × 0.27 mm^2 which is the smallest among other similar reported works. At 10-Gb/s, the VGA consumes 50 mW power from a single 1.2 V supply and exhibits an output data jitter of less than 30 pspp.||URI:||https://hdl.handle.net/10356/99299
|ISSN:||1674-4926||DOI:||http://dx.doi.org/10.1088/1674-4926/33/8/085003||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||EEE Journal Articles|
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