DELAY CONTROL SYSTEM HAVING TOLERANCE FOR PVT VARATION AND METHOD THEREOF

摘要

According to an embodiment of the present invention, a delay control system comprises: a detection compensation block for supplying compensation current by detecting a process voltage temperature (PVT) variation while receiving a constant current source; a current summation block for providing summation current by receiving the compensation current; a current voltage (IV) converter for controlling bias voltage according the quantity of the summation current by receiving the summation current; and a delay chain block capable of controlling a delay time in response to the bias voltage.