Spurs won 4-0 on Tyneside.
Asked if he could demand any more from Adebayor, who now has nine goals since being recalled to the fold, Sherwood said: "We are always asking for more, but I am not sure we are going to achieve that at the moment. He's at the top of his game.
"He's a real credit to the football club at this present moment in time. He's an example for all our young players to look up to, someone who applies himself on and off the pitch and the training field.
"He never leaves anything on the training field, he works very, very hard and it mirrors that when he steps on to the field."