Linares Barranco, BernabéRodríguez Vázquez, Ángel BenitoSánchez Sinencio, EdgarHuertas Díaz, José Luis2020-03-162020-03-161991Linares Barranco, B., Rodríguez Vázquez, Á.B., Sánchez Sinencio, E. y Huertas Díaz, J.L. (1991). Frequency tuning loop for VCOs. En IEEE International Symposium on Circuits and Systems (2617-2620), Singapur, Singapur: Institute of Electrical and Electronics Engineers.0-7803-0050-50271-4310https://hdl.handle.net/11441/94188A frequency tuning circuit is introduced for VCOs (voltage-controlled oscillators) so that the final relationship between oscillating frequency and input control voltage is fixed and independent of nonidealities. This tuning loop is applied to an OTA-C sinusoidal VCO. Such an oscillator has an output frequency-input voltage relationship that depends on temperature, process parameters, and even amplitude of the oscillations. It is shown that, by adding the tuning loop, nonideal dependences will be minimized.application/pdf4 p.engAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/openAccesshttps://doi.org/10.1109/ISCAS.1991.176082