Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/99299
Title: A 10-Gb/s inductor-less variable gain amplifier with a linear-in-dB characteristic and DC-offset cancellation
Authors: Liu, Chang
Yan, Yuepeng
Goh, Wang Ling
Xiong, Yong-Zhong
Zhang, Lijun
Madihian, Mohammad
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
http://hdl.handle.net/10220/17184
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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