Integrated circuit devices having a data controlled amplifier and methods of operating the same

An integrated circuit device, comprising:

• a first decoder that is configured to select a first gray scale input voltage responsive to at least one bit of a multi-bit data signal;
• a second decoder that is configured to select a second gray scale input voltage responsive to the at least one bit of the multi-bit data signal;
• and
• an amplifier circuit comprising a single pull-up transistor, a single pull-down transistor, a first sub amplifier, and a second sub amplifier, the first and second sub amplifiers being selectively operable responsive to at least one other bit of the multi-bit data signal;
• wherein the first sub amplifier has a first input terminal connected to the first gray scale input voltage, a second input terminal connected to a common node of the pull-up and pull-down transistors, and an output terminal directly connected a gate of the pull-up transistor;
• the second sub amplifier has a first input terminal connected to the second gray scale input voltage, a second input terminal connected to the common node of the pull-up and pull-down transistors, and an output terminal directly connected to a gate of the pull-down transistor;
• and
• wherein the first and second decoders are not responsive to the at least one other bit of the multi-bit data signal.