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