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| 型號： | ADD8702 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 12-Channel Gamma Buffers with Vcom Buffer |
| 中文描述： | 12通道伽馬緩沖器，具有VCOM緩沖器 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 233K |
| 代理商： | ADD8702 |
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
Tel: 781/329-4700 Fax: 781/326-8703
www.analog.comADD8702
12-Channel Gamma Buffers
with V
COM
Buffer
PANEL
TIMING
CONTROLLER
TIMING AND CONTROL
SCAN DRIVER CONTROL
GAMMA
REFERENCE
VOLTAGES
GAMMA
V
COM
R
384
SOURCE DRIVER
NO. 1
768
SCAN
DRIVERS
TFT COLOR PANEL
1024 768
384
SOURCE DRIVER
NO. 2
384
SOURCE DRIVER
NO. 8
ADD8702
G
B
Figure 1. Typical SVGA TFT LCD Application
FUNCTIONAL BLOCK DIAGRAM
GND
V
DD
VGMA6
VGMA5
VGMA4
VGMA3
VGMA2
VGMA1
24
23
22
21
20
19
18
17
V
DD
V
COM
ADJ
V
HIGH
V
IN
11
V
IN
10
V
C
O
V
I
6
V
I
5
V
I
4
V
I
3
V
I
2
V
L
V
D
G
V
IN
9
V
IN
8
V
IN
7
G
V
V
V
V
V
V
9
10
11
12
13
14
15
16
32
31
30
26
28
27
26
25
1
2
3
4
5
6
7
8
FEATURES
Programmable 12-Channel Gamma Reference Generator
Mask Programmable Adjustable V
COM
Buffer
Upper/Lower Outputs Swing to V
DD
/GND
Continuous Output Current: 10 mA
V
COM
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
GENERAL DESCRIPTION
The ADD8702 is a low cost, mask programmable, 12-channel
gamma reference generator, plus an adjustable V
COM
driver. This
part is designed to provide gamma correction for high resolution
TFT LCD panels. The 12 gamma reference levels and V
COM
are
mask programmable to 0.3% resolution using the on-chip 500
chain resistor string. This reduces component and board costs.
The ADD8702 provides a complete programmed set of gamma
voltage references for the LCD source drivers. These references
settle quickly to load change. The V
COM
output is stable with
high capacitive loads and can source or sink 250 mA peak cur-
rent. The V
COM
output level can be adjusted using an external
trim-potentiometer or discrete resistors.
The output pins are compatible with the ADD8701. This allows
for single board design and fast turns for prototyping using the
initial ADD8701 board design.
The ADD8702 is specified over the temperature range of –40
°
C
to +85
°
C and comes in the 32-lead lead frame chip scale pack-
age (LFCSP) for compact board space.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADD8702ACP-REEL | 12-Channel Gamma Buffers with Vcom Buffer |
| ADD8702ACP-REEL7 | 12-Channel Gamma Buffers with Vcom Buffer |
| ADD8754 | LCD Panel Power, VCOM, and Gate Modulation |
| ADD8754ACPZ-REEL | LCD Panel Power, VCOM, and Gate Modulation |
| ADD8754ACPZ-REEL7 | LCD Panel Power, VCOM, and Gate Modulation |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADD8702ACP-R2 | 制造商:Analog Devices 功能描述:12-CHANNEL GAMMA BUFFERS WITH VCOM BUFFER 制造商:Rochester Electronics LLC 功能描述:13 CHANNEL BUFFER - Bulk |
| ADD8702ACP-REEL | 制造商:AD 制造商全稱:Analog Devices 功能描述:12-Channel Gamma Buffers with Vcom Buffer |
| ADD8702ACP-REEL7 | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| ADD8704 | 制造商:AD 制造商全稱:Analog Devices 功能描述:16 V Quad Operational Amplifier |
| ADD8704ACPZ-R2 | 制造商:Rochester Electronics LLC 功能描述:16V QUAD OP AMP FOR LCD - Bulk 制造商:Analog Devices 功能描述: |
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