A 10-Gb/s inductor-less variable gain amplifier with a linear-in-dB characteristic and DC-offset cancellation
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,...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/99299 http://hdl.handle.net/10220/17184 |
| _version_ | 1811693207535222784 |
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| author | Liu, Chang Yan, Yuepeng Goh, Wang Ling Xiong, Yong-Zhong Zhang, Lijun Madihian, Mohammad |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Liu, Chang Yan, Yuepeng Goh, Wang Ling Xiong, Yong-Zhong Zhang, Lijun Madihian, Mohammad |
| author_sort | Liu, Chang |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T06:48:01Z |
| format | Journal Article |
| id | ntu-10356/99299 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:48:01Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/992992020-03-07T14:02:36Z A 10-Gb/s inductor-less variable gain amplifier with a linear-in-dB characteristic and DC-offset cancellation Liu, Chang Yan, Yuepeng Goh, Wang Ling Xiong, Yong-Zhong Zhang, Lijun Madihian, Mohammad School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Semiconductors 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. 2013-10-31T09:14:04Z 2019-12-06T20:05:31Z 2013-10-31T09:14:04Z 2019-12-06T20:05:31Z 2012 2012 Journal Article 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-. 1674-4926 https://hdl.handle.net/10356/99299 http://hdl.handle.net/10220/17184 10.1088/1674-4926/33/8/085003 en Journal of semiconductors |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering::Semiconductors Liu, Chang Yan, Yuepeng Goh, Wang Ling Xiong, Yong-Zhong Zhang, Lijun Madihian, Mohammad A 10-Gb/s inductor-less variable gain amplifier with a linear-in-dB characteristic and DC-offset cancellation |
| title | A 10-Gb/s inductor-less variable gain amplifier with a linear-in-dB characteristic and DC-offset cancellation |
| title_full | A 10-Gb/s inductor-less variable gain amplifier with a linear-in-dB characteristic and DC-offset cancellation |
| title_fullStr | A 10-Gb/s inductor-less variable gain amplifier with a linear-in-dB characteristic and DC-offset cancellation |
| title_full_unstemmed | A 10-Gb/s inductor-less variable gain amplifier with a linear-in-dB characteristic and DC-offset cancellation |
| title_short | A 10-Gb/s inductor-less variable gain amplifier with a linear-in-dB characteristic and DC-offset cancellation |
| title_sort | 10 gb s inductor less variable gain amplifier with a linear in db characteristic and dc offset cancellation |
| topic | DRNTU::Engineering::Electrical and electronic engineering::Semiconductors |
| url | https://hdl.handle.net/10356/99299 http://hdl.handle.net/10220/17184 |
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