a data receiver which includes a timing recovery circuit or periodically adjusting a timing signal used to control sampling of the received signal is arranged to reduce or eliminate phase jitter introduced as a result of the adjustments . apparatus and a method are described for forming a correction factor which is a joint function of the timing adjustment increment and a previous correction factor . typically , correction is accomplished by forming the complex product of the in - phase and quadrature - phase components of the received signal and the recursively updated correction factor .