Datasheet

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SLOS359F − MARCH 2001 − REVISED MAY 2004
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17
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.
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