Deterministic Foreground Calibration of Gain and Integral Nonlinearity in Constant-Slope Digital-to-Time Converters for Fractional Output Dividers
Fractional output dividers (FODs) derive many clock domains from one integer-N phase-locked loop, but the gain error and integral nonlinearity (INL) of their digital-to-time converter (DTC) limit spectral purity. Existing FOD calibrations estimate the INL statistically, with no deterministic step count or residual boun...