BUF20800,pdf(18-Channel, Gamma
The BUF20800 is a programmable voltage reference generator designed for gamma correcTIon in TFT-LCD panels. It provides 18 programmable outputs for gamma correcTIon and two channels for VCOM adjustment, each with 10-bit resoluTIon.
This programmability replaces the tradiTIonal, timeconsuming process of changing resistor values to optimize the various gamma voltages and allows designers to determine the correct gamma voltages for a panel very quickly. Required changes can also be easily implemented without hardware changes.
The BUF20800 uses TI’s latest, small-geometry analog CMOS process, which makes it a very competitive choice for full production, not just evaluation.
Programming of each output occurs through an industry-standard, two-wire serial interface.
