A linearly-tunable OTA-C sinusoidal oscillator for low-voltage applications
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
27/05/2014
27/05/2014
01/01/2002
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Resumo |
A low-voltage, low-power OTA-C sinusoidal oscillator based on a triode-MOSFET transconductor is here discussed. The classical quadrature model is employed and the transconductor inherent nonlinear characteristic with input voltage is used as the amplitude-stabilization element. An external bias VTUNE linearly adjusts the oscillation frequency. According to a standard 0.8μm CMOS n-well process, a prototype was integrated, with an effective area of 0.28mm2. Experimental data validate the theoretical analysis. For a single 1.8V-supply and 100mV≤VTUNE≤250mV, the oscillation frequency fo ranges from 0.50MHz to 1.125MHz, with a nearly constant gain KVCO=4.16KHz/mV. Maximum output amplitude is 374mVpp @1.12MHz. THD is -41dB @321mVpp. Maximum average consumption is 355μW. |
Identificador |
http://dx.doi.org/10.1109/ISCAS.2002.1011011 Proceedings - IEEE International Symposium on Circuits and Systems, v. 2. 0271-4310 http://hdl.handle.net/11449/66771 10.1109/ISCAS.2002.1011011 WOS:000186280700104 2-s2.0-0036287115 |
Idioma(s) |
eng |
Relação |
Proceedings - IEEE International Symposium on Circuits and Systems |
Direitos |
closedAccess |
Palavras-Chave | #CMOS integrated circuits #Computer simulation #Electric network topology #Integrated circuit layout #MOSFET devices #Numerical analysis #Quadrature amplitude modulation #Transconductance #Transfer functions #Amplitude stabilization element #Circuit complexity #Finite source resistance #Maximum output amplitude #Oscillation frequency #Variable frequency oscillators |
Tipo |
info:eu-repo/semantics/conferencePaper |