
Analog Devices
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