Title :
Least Mean Square calibration method for VCO non-linearity
Author :
Venkatram, Hariprasath ; Inti, Rajesh ; Moon, Un-Ku
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA
Abstract :
This paper introduces Least Mean Square (LMS) based calibration technique for Voltage Controlled Oscillator (VCO) based ADC. The VCO provides an inherent sinc filtering for the input voltage. The harmonics are also attenuated by the corresponding sinc functions. An 8-bit VCO based ADC was simulated with a 5-bit linear VCO. This ADC was calibrated using LMS algorithm. After calibration, SNDR is close to the ideal 8-bit converter.
Keywords :
least mean squares methods; voltage-controlled oscillators; LMS based calibration; VCO based ADC; VCO nonlinearity; least mean square calibration; sinc filtering; sinc function; voltage controlled oscillator; word length 5 bit; word length 8 bit; Calibration; Filtering; Harmonic analysis; Least squares approximation; Power harmonic filters; Tuning; Voltage-controlled oscillators; LMS Calibration; Sinc filtering; Time-based ADC; VCO;
Conference_Titel :
Microelectronics (ICM), 2010 International Conference on
Conference_Location :
Cairo
Print_ISBN :
978-1-61284-149-6
DOI :
10.1109/ICM.2010.5696115
