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BUF04701 데이터시트(PDF) 14 Page - Texas Instruments

부품명 BUF04701
상세설명  Multi-Channel LCD Gamma Correction Buffer
PDF  30 Pages
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제조업체  TI2 [Texas Instruments]
홈페이지  https://www.ti.com
Logo TI2 - Texas Instruments

BUF04701 데이터시트(HTML) 14 Page - Texas Instruments

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V
COM
V
DD
BUF07703
R
S
(1)
SourceDriver
Gamma1
Gamma2
Gamma3
Gamma(n
2)
-
Gamma (n
1)
-
Gamma (n)
(3)
(1)
(1)
(1)
(1)
(1)
(2)
(2)
(2)
(2)
(2)
(2)
BUF07703
BUF06703
BUF05703
SBOS269C – MARCH 2003 – REVISED APRIL 2010
www.ti.com
APPLICATION INFORMATION
The
requirements
on
the
number
of
gamma
The BUFxx703 buffers the various nodes on the
correction channels vary greatly from panel to panel.
gamma correction resistor ladder. The low output
Therefore, the BUFxx703 series of gamma correction
impedance of the BUFxx703 forces the external
buffers offers different channel combinations. The
gamma
correction
voltage
on
the
respective
VCOM channel can be used to drive the VCOM node on
reference node of the LCD source driver. Figure 35
the LCD panel.
shows an example of the BUFxx703 in a typical block
diagram driving an LCD source driver with 6-channel
Gamma correction voltages are often generated
gamma correction reference inputs.
using a simple resistor ladder, as shown in Figure 35.
(1)
Optional; increases stability.
(2)
Stable without RS up to 30mF.
(3)
n = maximum number of gamma channels on respective BUFxx7703 devices.
Figure 35. LCD Source Driver Typical Block Diagram
14
Copyright © 2003–2010, Texas Instruments Incorporated
Product Folder Link(s): BUF07703 BUF06703 BUF05703



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