TY - GEN
T1 - A fully on-chip 25MHz PVT-compensation CMOS Relaxation Oscillator
AU - Abbasizadeh, Hamed
AU - Rikan, Behnam Samadpoor
AU - Lee, Kang Yoon
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/10/30
Y1 - 2015/10/30
N2 - A fully on-chip, low-power and small area CMOS Relaxation Oscillator (ROSC) with voltage integral feedback structure and a new Bandgap Reference voltage (BGR) for accurate oscillation frequency independent of the PVT and comparator's delay variations is presented. The designed circuit uses a new bandgap reference to generate the reference voltage required by relaxation oscillator which allow variations due to voltage and temperature to be compensated. Another merit of this oscillator is that the phase noise at low-offset frequency is suppressed by the voltage integral feedback circuit. The frequency of the relaxation oscillator is determined by the RC response time. Thus, the current and capacitance are controlled by temperature and process compensation circuits to compensate for the frequency variation. The ROSC is implemented in a 0.18μm CMOS technology and its active area is 0.14mm2. The target frequency is 25MHz and current consumption is 22μA, where VDD is 1.8V. The oscillation frequency variation for VDD ranges from 1.4 to 1.9V is 0.2% and for temperature ranges from -40 to 125°C is 0.18%.
AB - A fully on-chip, low-power and small area CMOS Relaxation Oscillator (ROSC) with voltage integral feedback structure and a new Bandgap Reference voltage (BGR) for accurate oscillation frequency independent of the PVT and comparator's delay variations is presented. The designed circuit uses a new bandgap reference to generate the reference voltage required by relaxation oscillator which allow variations due to voltage and temperature to be compensated. Another merit of this oscillator is that the phase noise at low-offset frequency is suppressed by the voltage integral feedback circuit. The frequency of the relaxation oscillator is determined by the RC response time. Thus, the current and capacitance are controlled by temperature and process compensation circuits to compensate for the frequency variation. The ROSC is implemented in a 0.18μm CMOS technology and its active area is 0.14mm2. The target frequency is 25MHz and current consumption is 22μA, where VDD is 1.8V. The oscillation frequency variation for VDD ranges from 1.4 to 1.9V is 0.2% and for temperature ranges from -40 to 125°C is 0.18%.
UR - https://www.scopus.com/pages/publications/84960120896
U2 - 10.1109/VLSI-SoC.2015.7314423
DO - 10.1109/VLSI-SoC.2015.7314423
M3 - Conference contribution
AN - SCOPUS:84960120896
T3 - IEEE/IFIP International Conference on VLSI and System-on-Chip, VLSI-SoC
SP - 241
EP - 245
BT - 2015 IFIP/IEEE International Conference on Very Large Scale Integration, VLSI-SoC 2015
PB - IEEE Computer Society
T2 - 23rd IFIP/IEEE International Conference on Very Large Scale Integration, VLSI-SoC 2015
Y2 - 5 October 2015 through 7 October 2015
ER -