on Monday ahead of a key German survey expected to show continued business sentiment improvement in euro zone's largest economy.
The Ifo index, due at 0800 GMT, is forecast to show a rise to 89.8 for July compared with 88.8 in June. This would be the third monthly rise in a row -- the number Ifo says it takes before the real economy can be expected to follow suit.
At 0650 GMT, the euro was down more tha a third of a percent against the dollar at $1.1460 , nearly a cent below Friday's three-week highs, as the greenback was fairly strong across the board on the back of Friday's strong gains on Wall Street.
The dollar also was up a third of a percent on the yen at 119.11 yen , and up half a percent on the Swiss franc at 1.3493
The blue chip Dow Jones industrial average hit a five week high and posted its biggest one-day percentage gain since mid-July during Friday's session, and U.S. stock futures were in positive territory on Monday.
This week will be rich in data for the dollar, though none of it out on Monday, with U.S. figures including second-quarter gross domestic product, the Institute for Supply Management's (ISM) manufacturing index and employment figures for July.