Overview: DATA SHEET
MOS INTEGRATED CIRCUIT
µ PD16740 384-OUTPUT TFT-LCD SOURCE DRIVER (COMPATIBLE WITH 256-GRAY SCALES) The µ PD16740 is a source driver for TFT-LCDs capable of dealing with displays with 256 gray scales. Data input is based on digital input configured as 8 bits by 6 dots (2 pixels), which can realize a full-color display of 16,700,000 colors by output of 256 values γ -corrected by an internal D/A converter and 11 external power modules. Because the output dynamic range is as large as VSS2 + 0.1 V to Vref – 0.1 V, level inversion operation of the LCD’s common electrode is rendered unnecessary. Also, to be able to deal with dot-line inversion, n-line inversion and column line inversion when mounted on a single side, this source driver is equipped with a built-in 8-bit D/A converter circuit whose odd output pins and even output pins respectively output gray scale voltages of differing polarity. The D/A converter, which incorporates a digital offset circuit, is suitable for an LCD panel in which liquid crystal transmittance in positive and negative polarities is different. Assuring a maximum clock frequency of 40 MHz when driving at 3.0 V, this driver is applicable to SXGA and XGA-standard TFT-LCD panels.
