Low-Jitter Multi-Output All-Digital Clock Generator Using DTC-Based Open Loop Fractional Dividers.

An all-digital reconfigurable multi-output clock generator is presented. A digital phase-locked loop provides a high-frequency clock to multiple independent open loop ΔΣ fractional dividers (FDIVs). A high resolution digital-to-time converter (DTC) whose range is calibrated in background is used to achieve low-jitter performance that is insensitive to process, voltage, and temperature variations. ...