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Content Provider | IET Digital Library |
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Author | Zhuang, Haoyu Zhu, Zhangming Yang, Yintang Liu, Lianxi |
Abstract | For processing charge coupled device (CCD) signals, a correlated double sampling (CDS) circuit must be used to eliminate noise. Usually, the amplitude of the CCD signals is uncertain, either too small or too large, hence a variable-gain amplifier (VGA) is also needed to amplify the CCD signals. Traditionally, the CDS and the VGA are separated, each of which consumes much energy and large area. If only the CDS and the VGA would be combined together, much energy and area could be saved. Hence, a CDS with VGA functionality is proposed to achieve this goal. Besides, the VGA functionality provides a gain range of 0–18 dB, programmable with a 9 bit resolution, which is far better than the traditional ones. Also, the VGA gain curve follows a linear-in-dB characteristic, hence the VGA functionality has rather good linearity. Finally, the VGA gain curve demonstrates the good performance of the VGA functionality. |
Starting Page | 158 |
Ending Page | 159 |
Page Count | 2 |
ISSN | 00135194 |
Volume Number | 50 |
e-ISSN | 1350911X |
Issue Number | Issue 3, Jan (2014) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/el/50/3 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/el.2013.2133 |
Journal | Electronics Letters |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | A/D And D/A Convertor Amplifiers Analogue-Digital Conversion CCD Signal Amplitude CCD Signal Processing CDS Circuit Charge Coupled Device Signal Processing Charge-Coupled Device Circuit Correlated Double Sampling Circuit Field Effect Integrated Circuit Gain 0 DB to 18 DB Integrated Circuit Noise Noise Elimination Signal Conditioning Circuit Signal Processing And Conditioning Equipment And Technique Variable-gain Amplifier VGA Word Length 9 Bit |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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