Data input device of semiconductor memory appartus and control method thereof

A method for controlling a data input device of a semiconductor memory apparatus, comprising:

• enabling the data input device so that data can be inputted, wherein the data input device is a differential amplifier;
• controlling a current amount of the enabled data input device in an address reception operation performed during a standby mode so that a current flowing through the differential amplifier is not entirely switched off but reduced and the differential amplifier is enabled for the address reception operation performed during the standby mode;
• inputting data to the data input device;
• and
• converting inputted data to a differential signal and outputting the differential signal,
• wherein controlling a current amount comprises:
• generating a first enable signal by a clock enable signal;
• generating a second enable signal by an external command signal;
• and
• controlling a transfer or a stop of the transfer of the first and second enable signals depending upon operational states of the clock enable signal and the external command signal.