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http://hdl.handle.net/11422/14031| Type: | Dissertação |
| Title: | Amplificador operacional de transcondutância totalmente diferencial com alta linearidade e circuito de compensação de modo comum |
| Other Titles: | Operational transconductor amplifier fully diferential with high linearity and common mode feedback compensation |
| Author(s)/Inventor(s): | Freitas, João Pedro Gonçalves |
| Advisor: | Soares, Carlos Fernando Teodósio |
| Abstract: | Apresenta-se, nesta dissertção, o projeto de um Operational Transconductor Amplifier (OTA) totalmente diferencial de alta linearidade, baseado na topologia de um Folded Flipped Voltage Follower. Este foi desenvolvido e aplicado em um filtro passa-baixas de 3a ordem, baseado na aproximação de Chebyshev do tipo Gm −C, com frequência de corte de 300 kHz. Além disso, o OTA possui baixo offset diferencial e é integrado a um circuito de controle de modo comum para eliminar a tensão de modo comum dos terminais de saída. O projeto foi realizado para a tecnologia Complementary Metal-Oxide-Semiconductor (CMOS) de 0,35 µm e as tensões de alimentação do circuito serão + −1,5 V. |
| Abstract: | In this work, we present the design of a fully differential Operational Transconductor Amplifier (OTA) with high linearity, based on the Folded Flipped Voltage Follower (FFVF) Topology. This structure was developed and applied on a 3a order low-pass Gm − C filter, based on the Chebyshev’s aproximation with a cutoff frequency of 300 kHz. Besides that, the OTA has low differential offset and it is integrated with a common mode feedback compensation circuit, to eliminate the common mode voltage at the output nodes. The project was implemented in a 0.35 µm Complementary Metal-Oxide-Semiconductor (CMOS) technology and operates at a + −1.5 V power supply. |
| Keywords: | Operational transconductor amplifier Folded flipped voltage follower Offset diferencial |
| Subject CNPq: | CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA |
| Program: | Programa de Pós-Graduação em Engenharia Elétrica |
| Production unit: | Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia |
| Publisher: | Universidade Federal do Rio de Janeiro |
| Issue Date: | Mar-2019 |
| Publisher country: | Brasil |
| Language: | por |
| Right access: | Acesso Aberto |
| Appears in Collections: | Engenharia Elétrica |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| JoaoPedroGoncalvesFreitas.pdf | 6.82 MB | Adobe PDF | View/Open |
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