BUF05704 Datasheet, PDF (16/25 Pages) Burr-Brown (TI) – 18 - V SUPPLY MULTI - CHANNER GAMMA CORRECTION BUFFER

BUF05704, BUF06704
BUF07704, BUF11704
SBOS277E − JUNE 2004 − REVISED DECEMBER 2004
Table 1. How to Combine for > 10 Channels
BUF05704 BUF06704 BUF07704 BUF11704
12ch
—
2
—
—
12ch + V_COM
—
1
1
—
14ch + V_COM
1
—
—
1
16ch + V_COM
—
1
—
1
18ch + V_COM
—
—
—
2
20ch + V_COM
—
—
—
2
COMPLETE LCD SOLUTION FROM TI
In addition to the BUFxx704 line of gamma correction
buffers, TI offers a complete set of ICs for the LCD panel
market, including source and gate drivers, timing
controllers, various power-supply solutions, and audio
power solutions. Figure 27 shows the total IC solution
from TI.
AUDIO POWER AMPLIFIER FOR TV
SPEAKERS
The TPA3005D2 is a 6 W (per channel) stereo audio
amplifier specifically targeted towards LCD monitors
and TVs. It offers highly efficient, filter-free Class-D
operation for driving bridge-tied stereo speakers. The
TPA3005D2 is designed to drive stereo speakers as low
as 8 Ω without an output filter. The high efficiency of the
TPA3005D2 eliminates the need for external heatsinks
when playing music. The TPA3008D2 is similar to the
www.ti.com
TPA3005D2, but is capable of 8 W of output power.
Texas Instruments offers a full line of linear and
switch-mode audio power amplifiers. For more
information, visit www.ti.com. For excellent audio
performance, TI recommends the OPA364 (SBOS259)
or OPA353 (SBOS103) as headphone drivers.
INTEGRATED DC/DC CONVERTERS FOR
LCD PANELS: TPS65100 and TPS65140
The TPS65100 and TPS65140 offer a very compact
and small power supply solution to provide all three
power-supply voltages required by TFT (thin film
transistor) LCD displays. Additionally the devices have
an integrated V_COM buffer. The auxiliary linear regulator
controller can be used to generate the 3.3 V logic power
rail for systems powered by a 5 V supply rail only. The
main output can power the LCD source drivers as well
as the BUFxx704. An integrated adjustable charge
pump doubler/tripler provides the positive LCD gate
drive voltage. An externally adjustable negative charge
pump provides the negative gate drive voltage. The
TPS65100 has an integrated V_COM buffer to power the
LCD backplane. A version of the BUFxx704 without the
integrated V_COM buffer could be used for minimum
redundancy and lowest cost. For LCD panels powered
by 5 V only, the TPS65100 has a linear regulator
controller that uses an external transistor to provide a
regulated 3.3 V output for the digital circuits. Contact
the local sales office for more information.
2.7 V−5 V
TPA3005D2
TPA3008D2
Audio
Speaker
Driver
TPS65140
TPS65100
LCD
Supply
15 V
26 V
−14 V
3.3 V
Reference
Gamma Correction
BUFxx704
n
n
Source Driver
Logic and
Timing
Controller
High−Resolution
TFT−LCS Panel
V_COM
Figure 27. TI LCD Solution
16