Abstract
A charge-pump circuit using a currentbypass technique, which suppresses charge sharing and reduces the sub-threshold currents, helps to decrease phase-locked loop (PLL) jitter without resorting to a feedback amplifier. The PLL shows no stability issues and no power-up problems, which may occur when a feedback amplifier is used. The PLL is implemented in 0.11-μm CMOS technology to achieve 0.856-ps RMS and 8.75-ps peak-to-peak jitter, which is almost independent of ambient temperature while consuming 4 mW from a 1.2-V supply.
Original language | English |
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Pages (from-to) | 331-338 |
Number of pages | 8 |
Journal | Journal of Semiconductor Technology and Science |
Volume | 14 |
Issue number | 3 |
DOIs | |
State | Published - Jun 2014 |
Keywords
- Charge pump
- Charge sharing
- Jitter
- Phase-locked Loop
- Subthreshold current