參數(shù)資料
型號: BUF05704AIPWP
英文描述: 18 - V SUPPLY MULTI - CHANNER GAMMA CORRECTION BUFFER
中文描述: 18 - V電源多- CHANNER伽瑪校正緩沖區(qū)
文件頁數(shù): 13/25頁
文件大?。?/td> 384K
代理商: BUF05704AIPWP
SBOS277E JUNE 2004 REVISED DECEMBER 2004
www.ti.com
13
APPLICATION INFORMATION
The requirements on the number of gamma correction
channels vary greatly from panel to panel. Therefore,
the BUFxx704 series of gamma correction buffers
offers different channel combinations. The BUF11704
offers 10 gamma channels plus one V
COM
channel,
whereas the BUF07704 provides six gamma channels
plus one V
COM
. The V
COM
channel on both models can
be used to drive the V
COM
node on the LCD panel.
Gamma correction voltages are often generated using
a simple resistor ladder, as shown in Figure 21. The
BUFxx704 buffers the various nodes on the gamma
correction resistor ladder. The low output impedance of
the BUFxx704 forces the external gamma correction
voltage on the respective reference node of the LCD
source driver. Figure 21 shows an example of the
BUFxx704 in a typical block diagram driving an LCD
source driver with 10- or 6-channel gamma correction
reference inputs.
BUFxx704
V
DD
R
S(1)
(1)
(2)
(2)
(2)
(2)
(2)
(2)
(1)
(1)
(1)
(1)
V
COM
(1) Optional
Increases stability.
(2) Optional capacitor.
(3) n = max number of gamma channels
on respective BUFxx704.
Source Driver
Gamma 1
Gamma 2
Gamma 3
Gamma (n
2)
Gamma (n
1)
Gamma (n)
(3)
Figure 21. LCD Source Driver Typical Block Diagram
相關(guān)PDF資料
PDF描述
BUF05704AIPWPR 18 - V SUPPLY MULTI - CHANNER GAMMA CORRECTION BUFFER
BUF06704 18 - V SUPPLY MULTI - CHANNER GAMMA CORRECTION BUFFER
BUF06704AIPWP 18 - V SUPPLY MULTI - CHANNER GAMMA CORRECTION BUFFER
BUF07704 18 - V SUPPLY MULTI - CHANNER GAMMA CORRECTION BUFFER
BUF08800AIPWPR Programmable Reference Generator and 400mA VCOM Driver
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