Abstract: A low power,continuous phase-switching multi-modulus divider is proposed based on the "time reuse" method.The novel phase-switching control strategy significantly reduces the delay of the phase-switching control loop so that the multi-modulus divider can work with higher input frequency and obtain the maximum modulus for a low power supply.According to the measurement results,this multi-modulus divider can divide the 2.4GHz input frequency by 48 up to 64 for a minimum power supply voltage of 2.5V in a 0.35μm CMOS process.The maximum power dissipation is only 4.85mW.Compared with other CMOS multi-modulus dividers reported recently,our design demonstrates a considerable improvement in the power-to-speed ratio.

Key words: multi-modulus divider, phase-switching, low power, time reuse