ATT3209 Datasheet, PDF (1/10 Pages) List of Unclassifed Manufacturers – Temperature Compensating Gamma Trimster TM ATT3209

Preliminary Information
Temperature Compensating Gamma Trimster™ ATT3209
FEATURES
• 9 Programmable Buffered Gamma
Correction Outputs (V_GMA0 – V_GMA8)
− V_GMA Output Range 0 to 14V
− V_GMA Output Accuracy Better Than 1% of
A_VDD Reference
− V_GMA Output Drive > 100µA
• Nonvolatile Storage of 32 Gamma
Reference Providing
− Dynamic Gamma Correction and Gamma
Correction Based on Programmed
Temperature Profiles
• 2 Programmable Buffered V_COM Outputs
• In System Programmability
• Digital Programming Interface
APPLICATIONS
• Yield Improvement through Gamma
Programming at Test
• Simple Implementation of Dynamic Gamma
Compensation
• LCD Panel Color Calibration
• Optimized Temperature Dependent Gamma
Correction
DESCRIPTION
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 V_COM outputs providing
independent multiple V_COM trim points to
minimize flicker on the LCD panel.
Proprietary and Confidential
Typical Application
Rev 2/7/2005