Campbell looked slow to react for the first goal and headed the ball into Jermaine Pennant's path for the second.
Pardew said: "I do not think Sol Campbell played poorly. I thought he gave a good account of himself."
He added: "We have to make sure we are a whole lot better in our next home game. We have Wolves next and they've had a great victory (against Aston Villa). That's a big match now."