Abstract
A CMOS self-biased fully differential amplifier is presented. Due to the self-biasing structure of the amplifier and its associated negative feedback, the amplifier is compensated to achieve low sensitivity to process, supply voltage and temperature (PVT) variations. The output common-mode voltage of the amplifier is adjusted through the same biasing voltages provided by the common-mode feedback (CMFB) circuit. The amplifier core is based on a simple structure that uses two CMOS inverters to amplify the input differential signal. Despite its simple structure, the proposed amplifier is attractive to a wide range of applications, specially those requiring low power and small silicon area. As two examples, a sample-and-hold circuit and a second order multi-bit sigma-delta modulator either employing the proposed amplifier are presented. Besides these application examples, a set of amplifier performance parameters is given.
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Bazes, M.: Two Novel Fully Complementary Self-Biased CMOS Differential Amplifiers. J. of Solid-State Circuits 26, 165–168 (1991)
Zhu, Z., Liu, Y., Yang, Y.: A High Speed Self-biased CMOS Amplifier IP core. In: Proc. IEEE International Workshop on VLSI Design and Video Technology, pp. 6–9 (2005)
Mandal, P., Visvanathan, V.: A Self-Biased High Performance Folded Cascode CMOS Op-Amp. In: Proc. 10th International Conference on VLSI Design, pp. 429–434 (1997)
Giustolisi, G., Grasso, A.D., Pennisi, S.: High-Drive and Linear CMOS Class-AB Pseudo-Differential Amplifier. IEEE Trans. on Circuits and Systems II 54(2), 112–116 (2007)
Xiao, P., Kuchta, D., Stawiasz, K., Ainspan, H., Choi, J.-H., Shin, H.: A 500 Mb/s, 20-Channel CMOS Laser Diode Array Driver for a Parallel Optical Bus. IEEE ISSCC Digest of Technical Papers 467, 250–251 (1997)
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Custódio, J.R., Figueiredo, M., Santin, E., Goes, J. (2010). A CMOS Inverter-Based Self-biased Fully Differential Amplifier. In: Camarinha-Matos, L.M., Pereira, P., Ribeiro, L. (eds) Emerging Trends in Technological Innovation. DoCEIS 2010. IFIP Advances in Information and Communication Technology, vol 314. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-11628-5_60
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DOI: https://doi.org/10.1007/978-3-642-11628-5_60
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-11627-8
Online ISBN: 978-3-642-11628-5
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