General Description

The DS3514 is a programmable gamma and VCOM voltage generator that supports both real-time updating as well as multibyte storage of gamma/VCOM data in onchip EEPROM memory. An independent 10-bit DAC, two 10-bit data registers, and four words of EEPROM memory are provided for each individually addressable gamma or VCOM channel. High-performance buffer amplifiers are integrated on-chip, providing rail-to-rail, low-power (400μA/gamma channel) operation. The VCOM channel features a high current drive (> 250mA peak) and a fast-settling buffer amplifier optimized to drive the VCOM node of a wide range of TFT-LCD panels.

Features

? 10-Bit Gamma Buffers, 14 Channels

? 8-Bit VCOM Buffer, 1 Channel

? Four 10-Bit EEPROM Words per Channel

? Low-Power 400μA/ch Gamma Buffers

? I2C-Compatible Serial Interface

? Flexible Control from I2C or Pins

? 9.0V to 15.0V Analog Supply

? 2.7V to 5.5V Digital Supply

? 48-Pin TQFN Package (7mm x 7mm)

Applications

? ?TFT-LCD Gamma and VCOM Buffer

? ?Adaptive Gamma and VCOM Adjustment (Real Time by I2C, Select EEPROM Through I2C or S0/S1 Pins)

? ?Industrial Process Control