WFP6462
Advanced Product Information
1.
PRODUCT DESCRIPTION
Signal Driver
300-Channel, 6-Bit Dot Inversion Driver
for TFT-LCD Applications
The WFP6462 is a 6-bit, 300-channel signal driver
designed for low power SVGA TFT-LCD panel
applications. The WFP6462 accepts 2 sets of ref-
erence voltages EV0..EV8 and OV0..OV8. Chan-
nels V
S2n
use EV0..EV8, and channels V
S2n-1
use
OV0..OV8 (n = 1..150). This allows column or dot
inversion to be easily implemented in single bank
applications.
The WFP6462鈥檚 internal architecture provides
separate resistor-string DACs for both the odd
and even channels. The value of the individual
resistor segments is weighted to reduce signal
driver power dissipation by as much as 20% to
60% when compared to non-weighted resistor
string DAC architectures.
WFP6462
Signal Driver
300
WFP6462
Signal Driver
300
...
WFP6462
Signal Driver
300
Gate
Driver
Data
from
Graphics
Controller
Control
LCD
Control
ASIC
Reference
Amplifier
Circuit
.......
800x600
262,144-Color LCD
Gate
Driver
November 12, 1999
Rev. 0.03
1
i