AGT3209

Preliminary Information www.DataSheet4U.com Temperature Compensating Gamma Trimster™ ATT3209 DESCRIPTION FEATURES 9 Programmable Buffered Gamma Correction Outputs (V GMA0 – VGMA8) − VGMA Output Range 0 to 14V − VGMA Output Accuracy Better Than 1% of AVDD Reference − VGMA Output Drive > 100µA Nonvolatile Storage of 32 Gamma Reference Providing − Dynamic Gamma Correction and Gamma Correction Based on Programmed Temperature Profiles 2 Programmable Buffered VCOM Outputs In System Programmability Digital Programming Interface Yield Improvement through Gamma Programming at Test Simple Implementation of Dynamic Gamma Compensation LCD Panel Color Calibration Optimized Temperature Dependent Gamma Correction The ATT3209 is a programmable gamma reference that is designed to address gamma correction in high-resolution LCD panels. The gamma voltage out puts are programmable with their individual output values saved in a nonvolatile analog storage cell. The storage cells are arranged in a 9 x 32 array allowing thirty-two gamma correction profiles to be stored. Depending upon the application requirements the ATT3209 is configured to provide either two or three temperature compensated Bank Select outputs that would be used to drive the respective Bank Select inputs of the AGT3209 Gamma Trimster. In addition to the V GMA outputs there are two programmable VCOM outputs providing independent multiple VCOM trim points to minimize flicker on the LCD panel. APPLICATIONS Typi...