The market was looking ahead to major economic data releases this week and to more congressional testimony from Federal Reserve Chairman Alan Greenspan.
Analysts have said the dollar's outlook remained unclear, with market participants divided between the positives for the U.S. currency of rising interest rates and solid growth and the negative of the U.S. current account and budget deficits.
Two reports this week, on U.S. manufacturing activity for February from the Institute for Supply Management later on Tuesday and on monthly payrolls for February on Friday, are expected to highlight robust U.S. economic growth.
With the market already eyeing steady Fed rate increases, unexpectedly strong figures that boost the likelihood of the central bank speeding up the pace of credit tightening would be needed to help the dollar, analysts said.
The Fed has already lifted official rates by a quarter-percentage point six times since June to 2.50 percent.
Central banks in Australia and Canada are slated to announce rate decisions on Tuesday, while the European Central Bank's decision is on Thursday.
The ECB and the Bank of Canada are expected to leave rates at 2.0 and 2.5 percent respectively, while most analysts expect the Reserve Bank of Australia to lift its cash rate by a quarter percentage point to 5.5 percent.
The Bank of Canada's decision is due at 9 a.m. EST, while the RBA will announce any change in interest rates at 5:30 p.m. EST.