BUF11702 Datasheet, PDF (17/24 Pages) Burr-Brown (TI) – MULTI CHANNEL LCD GAMMA CORRECTION BUFFER

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APPLICATIONS WITH >10 GAMMA CHANNELS
When a greater number of gamma correction channels
are required, two or more BUFxx702 devices can be
used in parallel, as shown in Figure 48. This capability
provides a cost-effective way of creating more
reference voltages over the use of quad-channel op
amps or buffers. The suggested configuration in Figure
48 simplifies layout. The various different channel
versions provide a high degree of flexibility and also
minimize total cost and space.
BUF11702
BUF07702
SLOS359F − MARCH 2001 − REVISED MAY 2004
Figure 48. Creating > 10 Gamma Voltage
Channels
MULTIPLE V_COM CHANNELS
In some LCD panels, more than one V_COM driver is
required for best panel performance. Figure 49 uses
three BUF07702s to create a total of 18
gamma-correction and three V_COM channels. This
solution saves considerable space and cost over the
more conventional approach of using five or six
quad-channel buffers or op amps.
Figure 49. 18-Channel Application with Three
Integrated V_COM Channels
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