DIGITAL-TO-ANALOG CONVERTER, A SOURCE DRIVING CIRCUIT HAVING A DIGITAL-TO-ANALOG CONVERTER, AND A DISPLAY DEVICE HAVING THE SOURCE DRIVING CIRCUIT, HAVING A DIGITAL TO ANALOG CONVERTER WITH SMALL LOW OCCUPIED AREA

摘要

PURPOSE: A digital-to-analog converter is provided to reduce manufacturing costs since the device require a small chip area.;CONSTITUTION: A voltage-current converter(110) generates a first current signal proportion to the difference between a first voltage level and a second voltage level. A current mode digital to analog converter(120) generates a second current signal corresponding to a digital input signal in response to the digital input signal and the first current signal. An operational amplifier(130) modulate a drain current in response to the second current signal and the second voltage signal.;COPYRIGHT KIPO 2010