12-Channel Gamma Buffers with VCOM Buffer
12-Channel Gamma Buffers with VCOM Buffer ADD8701
FEATURES Single-Supply Operation: 7 V to 16 V Dual-Supply Operation: ؎...
Description
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...
Similar Datasheet