Low Cost 10-Bit, 6-Channel Output
Decimating LCD DecDriver
®

AD8383


Rev. 0
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FEATURES
High voltage drive to within 1.3 V of supply rails
Output short-circuit protection
High update rates
Fast, 100 Ms/s, 10-bit input data update rate
Low static power dissipation: 0.7 W
Includes STBY function
Voltage-controlled video reference (brightness) and
full-scale (contrast) output levels
INV bit reverses polarity of video signal
3.3 V logic, 9 V to 18 V analog supplies
High accuracy voltage outputs
Laser trimming eliminates the need for adjustments
Flexible logic
STSQ/XFR allow parallel AD8383 operation at various
resolutions
Fast settling into capacitive loads
30 ns settling time to 0.25% into 150 pF load
Slew rate 460 V/µs
Available in 48-lead 7 mm × 7 mm LFCSP package

APPLICATIONS
LCD analog column driver
FUNCTIONAL BLOCK DIAGRAM
VREFHI VREFLO
VID2
VID3
VID4
VID5
VID1
VID0
AD8383
STBY
BYP
R/L
E/O
CLK
STSQ
XFR
INV V1 V2
DB(0:9)
2-STAGE
2-STAGE
2-STAGE
2-STAGE
2-STAGE
2-STAGE
LATCH
LATCH
LATCH
LATCH
LATCH
LATCH
10 10
10 10
10 10
10 10
10 10
10 10
SCALING
CONTROL
SEQUENCE
CONTROL
BIAS
1010
DAC
DAC
DAC
DAC
DAC
DAC
04513-0-001

Figure 1

PRODUCT DESCRIPTION
The AD8383 provides a fast, 10-bit latched decimating digital
input that drives six high voltage outputs. 10-bit input words are
sequentially loaded into six separate, high speed, bipolar DACs.
Flexible digital input format allows several AD8383s to be used
in parallel for higher resolution displays. STSQ synchronizes
sequential input loading, XFR controls synchronous output
updating, and R/L controls the direction of loading as either
left-to-right or right-to-left. Six channels of high voltage output
drivers drive to within 1.3 V of the rail. For maximum flexibility,
the output signal can be adjusted for dc reference, signal
inversion.
The AD8383 is fabricated on the 26 V, fast bipolar XFHV
process developed by Analog Devices, Inc. This process
provides fast input logic, bipolar DACs with trimmed accuracy
and fast settling, high voltage, precision drive amplifiers on the
same chip.
The AD8383 dissipates 0.7 W nominal static power. The STBY
pin reduces power to a minimum with fast recovery.
The AD8383 is offered in a 48-lead, 7 mm × 7 mm × 0.85 mm
LFCSP package and operates over the commercial temperature
range of 0°C to 85°C.