Buffer Seguidor de Fonte de alta Velocidade e Baixa Distorção em CMOS
(A High-Speed Low-Distortion CMOS Source Follower Buffer)
Marcel Veloso Campos (email@example.com)1, Carlos Alberto Reis Filho (firstname.lastname@example.org)2
1Universidade Estadual de Montes Claros2Fundação Universidade Federal do ABC
This paper appears in: Revista IEEE América Latina
Publication Date: March 2013
Volume: 11, Issue: 2
This paper discusses the design and implementation of a pseudo-differential high-speed and highly linear novel Source-Follower Buffer in 0.35µm CMOS. The high linearity of Source Follower is achieved by means of a cascode transistor and an auxiliary structure to mitigate impact of channel modulation and parasitic capacitances. The new architecture consumes 10 mW from a 3.3-V supply and it achieves a total harmonic distortion of -74.5 dB at 100MHz, yielding 12-b resolution. Design methodology, simulation and experimental results are presented.
Source Follower, Linearity, A/D Converters, Total Harmonic Distortion
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