Editing Jitter (section)

===Sampling jitter===
In analog-to-digital and digital-to-analog conversion of signals, the sampling is normally assumed to be periodic with a fixed period—the time between every two samples is the same. If there is jitter present on the clock signal to the [[analog-to-digital converter]] or a [[digital-to-analog converter]], the time between samples varies and instantaneous signal error arises. The error is proportional to the [[slew rate]] of the desired signal and the absolute value of the clock error.  The effect of jitter on the signal depends on the nature of the jitter. Random jitter tends to add broadband noise while periodic jitter tends to add errant spectral components, "birdys".  In some conditions, less than a nanosecond of jitter can reduce the effective bit resolution of a converter with a [[Nyquist frequency]] of 22&nbsp;kHz to 14 bits.<ref name="Puente">{{Cite book|last=Puente León |first=Fernando |title=Messtechnik|publisher=Springer |year=2015 |page=332f |url=https://www.springer.com/de/book/9783662448205 |isbn=978-3-662-44820-5}}</ref>

Sampling jitter is an important consideration in high-frequency signal conversion, or where the clock signal is especially prone to interference.

In [[digital antenna array]]s [[Analog-to-digital converter|ADC]] and [[digital-to-analog converter|DAC]] jitters are the important factors determining the [[direction of arrival]] estimation accuracy<ref name=slyusarDoA>{{Cite journal|author = M. Bondarenko and V.I. Slyusar.|title = Influence of jitter in ADC on precision of direction-finding by digital antenna arrays. // Radioelectronics and Communications Systems. - Volume 54, Number 8, 2011.- Pp. 436 - 445.- |journal = Radioelectronics and Communications Systems |date = 6 September 2011 |volume = 54 |issue = 8 |page = 436 |doi = 10.3103/S0735272711080061|s2cid = 110506568|url= https://link.springer.com/content/pdf/10.3103%2FS0735272711080061.pdf |archive-url=https://ghostarchive.org/archive/20221009/https://link.springer.com/content/pdf/10.3103%2FS0735272711080061.pdf |archive-date=2022-10-09 |url-status=live}}</ref>  and the depth of jammers suppression.<ref name=slyusarjitter>{{Cite news|author =Bondarenko M.V., Slyusar V.I. |title = Limiting depth of jammer's suppression in a digital antenna array in conditions of ADC jitter.// 5th International Scientific Conference on Defensive Technologies, OTEH 2012. - 18 - 19 September, 2012. - Belgrade, Serbia. - Pp. 495 - 497.|url= http://slyusar.kiev.ua/OTEH_2012_SLYUSAR.pdf |archive-url=https://ghostarchive.org/archive/20221009/http://slyusar.kiev.ua/OTEH_2012_SLYUSAR.pdf |archive-date=2022-10-09 |url-status=live}}</ref>