The Magpies knocked the current holders out of the competition with a 2-0 victory at the Etihad Stadium to continue their recent resurgence.
Having made six changes to the side that beat Tottenham Hotspur on the weekend, Pardew insists that his gameplan was perfectly followed.
"We don't ever come not to win," the manager is quoted as saying by BT Sport. "We had a gameplan. The players needed to execute it but I couldn't ask for more than they gave me.
"It was outstanding in discipline and the way they carried the threat all night. The pace in wide areas is something that I think is an asset for us."
Newcastle will now face Tottenham in the quarter-finals.