Sense amplifier circuit and semiconductor device using the same

A sense amplifier circuit, comprising:

• an enable signal generation unit configured to generate an enable signal from a sense control signal in response to input signals;
• is a sink unit configured to supply a sense voltage in response to the enable signal;
• and
• a sense unit configured to generate output signals in response to the sense voltage and the input signals.

A semiconductor device, comprising:

• first data I/O lines configured to transmit input signals;
• a sense amplifier unit configured to be enabled when a change in a voltage level of the input signals is sensed and configured to generate output signals by amplifying the input signals;
• and
• second data I/O lines configured to transmit the output signals.

A semiconductor device, comprising:

• a bit line sense amplifier configured to amplify data of a memory cell;
• a column switch configured to transmit the amplified data to first data I/O lines in response to a column select signal;
• and
• a sense amplifier unit configured to be enabled when a voltage level of the first data I/O lines is changed by the transmitted data and configured to generate output signals by amplifying the transmitted data and output the output signals to second data I/O lines when the sense amplifier unit is enabled.