TY - GEN
T1 - Design of 1.1 GHz highly linear digitally-controlled ring oscillator with wide tuning range
AU - Tomar, A.
AU - Pokharel, R. K.
AU - Nizhnik, O.
AU - Kanaya, H.
AU - Yoshida, K.
PY - 2007
Y1 - 2007
N2 - This paper presents a simple architecture for 8-bit digital controlled oscillator (DCO) on 3-stages ring topology in TSMC 0.35um CMOS technology. A new schematic of tristate inverter is also proposed. The proposed tristate inverter has higher switching speed and low power consumption as compared to conventional one. The control digit changes the driving current that provides large tuning range from 333 MHz to 1472 MHz with very good linearity. The output voltage swing is constant and above 3volt (>90% of the supply voltage i.e. 3.3V). The presented circuit shows the fast response to the output frequency transition and this takes less than one clock period and without showing any ringing or damping during frequency transition. The proposed DCO has simulated phase noise of -106dBc/Hz @1Mhz and 63.4 mw power consumption at 1.1 GHz central frequency.
AB - This paper presents a simple architecture for 8-bit digital controlled oscillator (DCO) on 3-stages ring topology in TSMC 0.35um CMOS technology. A new schematic of tristate inverter is also proposed. The proposed tristate inverter has higher switching speed and low power consumption as compared to conventional one. The control digit changes the driving current that provides large tuning range from 333 MHz to 1472 MHz with very good linearity. The output voltage swing is constant and above 3volt (>90% of the supply voltage i.e. 3.3V). The presented circuit shows the fast response to the output frequency transition and this takes less than one clock period and without showing any ringing or damping during frequency transition. The proposed DCO has simulated phase noise of -106dBc/Hz @1Mhz and 63.4 mw power consumption at 1.1 GHz central frequency.
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U2 - 10.1109/RFIT.2007.4443926
DO - 10.1109/RFIT.2007.4443926
M3 - Conference contribution
AN - SCOPUS:49949095196
SN - 1424413079
SN - 9781424413072
T3 - RFIT 2007 - IEEE International Workshop on Radio-Frequency Integration Technology
SP - 82
EP - 85
BT - RFIT 2007 - IEEE International Workshop on Radio-Frequency Integration Technology
T2 - IEEE International Workshop on Radio-Frequency Integration Technology, RFIT 2007
Y2 - 9 December 2007 through 11 December 2007
ER -