BUF06703 Datasheet, PDF (18/25 Pages) Burr-Brown (TI) – MULTI-CHANNEL LEC GAMMA CORRECTION BUFFER

BUF07703
BUF06703
BUF05703
SBOS269A – MARCH 2003 – REVISED JUNE 2003
COMPLETE LCD SOLUTION FROM TI
Besides the BUFxx703 line of gamma correction
buffers, TI offers a complete set of ICs for the LCD panel
market: source and gate drivers, various power-supply
solutions, as well audio power solutions. Figure 41
shows the Total IC solution from TI.
Audio Power Amplifier for TV Speakers
The TPA3002D2 is a 7W (per channel) stereo audio
amplifier specifically targeted towards LCD monitors
and TVs. It offers highly efficient, filter-free Class-D
operation for driving bridged tied stereo speakers. The
TPA3002D2 is designed to drive stereo speakers as low
as 8Ω without an output filter. The high efficiency of the
TPA3002D2 eliminates the need for external heatsinks
when playing music. Stereo speaker volume is
controlled with a DC voltage applied to the volume
control terminal offering a range of gain from –40dB to
+36dB. Line outputs, for driving external headphone
amplifier inputs, are also DC voltage controlled with a
range of gain from –56dB to +20dB. An integrated +5V
regulated supply is provided for powering an external
headphone amplifier. Texas Instruments offers a full line
of linear and switch-mode audio power amplifiers. For
excellent audio performance TI recommends the
www.ti.com
OPA364 or OPA353 as headphone drivers. For more
information visit www.ti.com.
Integrated DC/DC Converter for LCD Panels:
TPS65100
The TPS65100 offers 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 device has an integrated
V_COM buffer. The auxiliary linear regulator controller
can be used to generate the 3.3V logic power rail for
systems powered by a 5V supply rail only. The main
output can power the LCD source drivers as well as the
BUFxx703. 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 BUFxx703 without the
integrated V_COM buffer could be used for minimum
redundancy and lowest cost. For LCD panels powered
by 5V only, the TPS65100 has a linear regulator
controller that uses an external transistor to provide a
regulated 3.3V output for the digital circuits. Contact the
local sales office for more information.
Figure 41. TI LCD Solution
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