TY - GEN
T1 - Design methodology for a low-frequency current-starved voltage-controlled oscillator with a frequency divider
AU - Lee, Tsung Hsueh
AU - Abshire, Pamela A.
PY - 2012
Y1 - 2012
N2 - This paper presents a design methodology for a low-frequency oscillator which consists of a current-starved (CS) voltage-controlled oscillator (VCO) and a frequency divider. The frequency divider is used to reduce frequency in an area efficient manner; achieving this by scaling up the sizes of VCO components is impractical for low frequency applications. We derive a model for the effective capacitance of a CSVCO so that design tradeoffs between area, power, and phase noise can be readily explored. The methodology supports optimization over these performance metrics, with adjustable weighting factors that emphasize their relative importance. Design examples in 0.5μm CMOS technology with 3.3 V supply are presented.
AB - This paper presents a design methodology for a low-frequency oscillator which consists of a current-starved (CS) voltage-controlled oscillator (VCO) and a frequency divider. The frequency divider is used to reduce frequency in an area efficient manner; achieving this by scaling up the sizes of VCO components is impractical for low frequency applications. We derive a model for the effective capacitance of a CSVCO so that design tradeoffs between area, power, and phase noise can be readily explored. The methodology supports optimization over these performance metrics, with adjustable weighting factors that emphasize their relative importance. Design examples in 0.5μm CMOS technology with 3.3 V supply are presented.
UR - https://www.scopus.com/pages/publications/84867315472
U2 - 10.1109/MWSCAS.2012.6292103
DO - 10.1109/MWSCAS.2012.6292103
M3 - Conference contribution
AN - SCOPUS:84867315472
SN - 9781467325264
T3 - Midwest Symposium on Circuits and Systems
SP - 646
EP - 649
BT - 2012 IEEE 55th International Midwest Symposium on Circuits and Systems, MWSCAS 2012
T2 - 2012 IEEE 55th International Midwest Symposium on Circuits and Systems, MWSCAS 2012
Y2 - 5 August 2012 through 8 August 2012
ER -