ADD8701

12-Channel Gamma Buffers with VCOM Buffer ADD8701 FEATURES Single-Supply Operation: 7 V to 16 V Dual-Supply Operation: ؎ 3.5 V to ؎8 V Supply Current: 13 mA Max Upper/Lower Buffers Swing to VDD/GND Continuous Output Current: 10 mA VCOM Peak Output Current: 250 mA Offset Voltage: 15 mV Max Slew Rate: 6 V/␮s Fast Settling Time with Large C-Load APPLICATIONS TFT LCD Panels FUNCTIONAL BLOCK DIAGRAM VCOM OUT GND V12 V11 V10 V9 V8 26 32 31 30 26 28 27 25 24 GND 23 VDD 22 V6 21 V5 20 V4 19 V3 18 V2 17 V1 VDD VCOM IN IN12 IN11 IN10 IN9 IN8 IN7 1 2 3 4 5 6 7 8 The ADD8701 is a low cost, 12-channel buffer amplifier and VCOM driver that operates from a single supply. The part is designed for high resolution TFT LCD panels, and is built on an advanced, high voltage, CBCMOS process. The buffers have high slew rate, 10 mA continuous output current, and high capacitive load drive capability. The VCOM buffer has increased drive of 35 mA and can drive large capacitive loads. The ADD8701 offers wide supply range and offset voltages below 15 mV. The ADD8701 is specified over the –40ºC to +85ºC temperature range and is available in a 32-lead lead frame chip scale package (LFCSP). All inputs and outputs incorporate internal ESD protection circuits. GND IN6 IN5 IN4 IN3 IN2 IN1 VDD GENERAL DESCRIPTION 9 10 11 12 13 14 15 16 V7 VDD V12 TIMING AND CONTROL GAMMA REFERENCE VOLTAGES PANEL TIMING CONTROLLER SCAN DRIVER CONTROL SOURCE DRIVER NO. 1 384 SOURCE DRIVER...