the present invention relates to a plasma display apparatus . the plasma display apparatus according to a first aspect of the present invention includes a plurality of discharge cells , and a plasma display panel in which a unit frame is driven with it being divided into a plurality of subfields , wherein when noise is included in the unit frame , the number of subfields constituting the unit frame , a color temperature and the number of sustain pulses are controlled by adjusting an output gain value of an output data . the plasma display apparatus constructed above according to the present invention checks random noise introduced to an input video data , and controls the number of subfields used in a noise screen by adjusting a gain . accordingly , there are advantages in that a phenomenon in which heat is generated by a signal input to a data drive ic can be prevented , and damage to the panel , which is incurred by the generation of heat , can be prevented . furthermore , since a reduced number of subfields can be driven , portions corresponding to extra subfields can be utilized for other purposes . accordingly , there is an advantage in that driving margin can be enhanced .