Artículo
A precise 90º quadrature OTA-C oscillator tunable in the 50-130-MHz range
Autor/es | Linares Barranco, Bernabé
Serrano Gotarredona, María Teresa Ramos Martos, J. Ceballos Cáceres, Joaquín Francisco Linares Barranco, Alejandro |
Departamento | Universidad de Sevilla. Departamento de Arquitectura y Tecnología de Computadores |
Fecha de publicación | 2004 |
Fecha de depósito | 2018-06-13 |
Publicado en |
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Resumen | We present a very-large-scale integration continuous-time sinusoidal operational transconductance amplifiers quadrature oscillator fabricated in a standard double-poly 0.8-μm CMOS process. The oscillator is tunable in the ... We present a very-large-scale integration continuous-time sinusoidal operational transconductance amplifiers quadrature oscillator fabricated in a standard double-poly 0.8-μm CMOS process. The oscillator is tunable in the frequency range from 50 to 130 MHz. The two phases produced by the oscillator show a low-quadrature phase error. A novel current-mode amplitude control scheme is developed that allows for very small amplitudes. Stability of the amplitude control loop is studied as well as design considerations for its optimization. Experimental results are provided. |
Cita | Linares Barranco, B., Serrano Gotarredona, M.T., Ramos Martos, J., Ceballos Cáceres, J.F. y Linares Barranco, A. (2004). A precise 90º quadrature OTA-C oscillator tunable in the 50-130-MHz range. IEEE Transactions on Circuits and Systems I: Regular Papers, 51 (4), 649-663. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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A Precise 90 Quadrature.pdf | 562.9Kb | [PDF] | Ver/ | |
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