GENERAL DESCRIPTION

The ADD8702 is a low cost, mask programmable, 12-channel gamma reference generator, plus an adjustable VCOM driver. This part is designed to provide gamma correction for high resolution TFT LCD panels. The 12 gamma reference levels and VCOM are mask programmable to 0.3 resolution using the on-chip 500 chain resistor string. This reduces component and board costs.

FEATURES

Programmable 12-Channel Gamma Reference Generator

Mask Programmable Adjustable VCOM Buffer

Upper/Lower Outputs Swing to VDD/GND

Continuous Output Current: 10 mA

VCOM Peak Output Current: 250 mA

Outputs with Fast Settling Time for Load Change

Output Pins Are Compatible with ADD8701

Single-Supply Operation: 7 V to 16 V

Supply Current: 15 mA Max

APPLICATIONS

TFT LCD Panels