Types of Jitter in Timing Systems

Types of Jitter in Timing Systems Jitter is the timing variations of a set of signal edges from their ideal values. Jitter in clock signals is typically caused by noise or other disturbances in the system. Contributing factors include thermal noise, power... More

Types of Jitter in Timing Systems Jitter is the timing variations of a set of signal edges from their ideal values. Jitter in clock signals is typically caused by noise or other disturbances in the system. Contributing factors include thermal noise, power supply variations, loading conditions, device noise, and interference coupled from nearby circuits. Jitter can be measured in a number of ways; the following are the major types of jitter: Period Jitter Period jitter is the deviation in cycle time of a clock signal with respect to the ideal period over a number of randomly selected cycles. Cycle to Cycle Period Jitter Cycle to cycle (C2C) jitter is defined in JEDEC Standard 65B as the variation in cycle time of a signal between adjacent cycles, over a random sample of adjacent cycle pairs. Long Term Jitter Long-term jitter measures the change in a clock’s output from the ideal position, over several consecutive cycles. The actual number of cycles used in the measurement is appli Less