Abstract:A rail-to-rail (R-to-R) regulating voltage-controlled oscillator (VCO) is employed to generate multiple-phase clocks for clock and data recovery in a display driver IC (DDI). To achieve a low supply and ground noise sensitivity, the proposed R-to-R regulating method generates VSP and VSN as the supply and the ground of the VCO instead of VDD and VSS. By applying the proposed method, the frequency-VDD variation rate of the VCO (%−f VCO / %−VDD) changes from 3.5%−f VCO /1%−VDD to 0.0073%−f VCO / 1%−VDD within th… Show more
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