A 10-bit CMOS DAC With Current Interpolated Gamma Correction for LCD Source Drivers

作者：Liu Pang Jung^*; Chen Yi Jan Emery

来源：IEEE Transactions on Circuits and Systems for Video Technology, 2012, 22(6): 958-965.

DOI：10.1109/TCSVT.2012.2186742

• Current interpolation
• digital-to-analog converter (DAC)
• gamma correction
• LCD driver

This paper presents a compact 10-bit digital-to-analog converter (DAC) for LCD source drivers. The cyclic DAC architecture is used to reduce the area of LCD column drivers when compared to the use of conventional resistor-string DACs. The current interpolation technique is proposed to perform gamma correction after D/A conversion. The gamma correction circuit is shared by four DAC channels using the interleave technique. A prototype 10-bit DAC with gamma correction function is implemented in 0.35 mu m CMOS technology and its average die size per channel is 0.053 mm(2), which is smaller than those of the R-DACs with gamma correction function. The settling time of the 10-bit DAC is 1 mu s, and the maximum INL and DNL are 2.13 least significant bit (LSB) and 1.30 LSB, respectively.

• 出版日期2012-6
• 单位中国科学院电工研究所