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In this paper, a small area spread-spectrum clock generator (SSCG) with high EMI reduction for SATA-3.0 is presented. Conventional methods use inductor-capacitance (LC) tank to fulfill the high frequency requirement for SATA-3.0. However, the monolithic inductors always occupy a large area, and required precisely characteristic for different fabrication processes. This research propose a SSCG using...
This work presents a charge pump (CP) calibration technique for a delta-sigma fractional-N phase-locked loop (ΣΔ-FNPLL). The proposed calibration method introduces an auxiliary path to the CP circuit and utilizes some interval within each reference cycle to detect the mismatch and then correct the up/down current difference. The proposed CP calibration is employed in the design of a 2.4-GHz ΣΔ-FNPLL...
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