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AD8385ASVZ Datasheet(PDF) 1 Page - Analog Devices

Part # AD8385ASVZ
Description  10-Bit, 12-Channel Decimating LCD DECDRIVER with Level Shifters
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD8385ASVZ Datasheet(HTML) 1 Page - Analog Devices

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10-Bit, 12-Channel Decimating
LCD DECDRIVER® with Level Shifters
AD8385
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703
© 2005 Analog Devices, Inc. All rights reserved.
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
Static power dissipation: 1.84 W
Voltage controlled video reference (brightness), offset,
and full-scale (contrast) output levels
INV bit reverses polarity of video signal
3.3 V logic, 9 V to 18 V analog supplies
Level shifters for panel timing signals
High accuracy voltage outputs
Laser trimming eliminates the need for adjustments or
calibration
Flexible logic
STSQ/XFR allow parallel AD8385 operation
Fast settling into capacitive loads
30 ns settling time to 0.25% into 150 pF load
Slew rate 460 V/µs
Available in 100-lead 14 mm × 14 mm TQFP E-pad
GENERAL DESCRIPTION
The AD8385 provides a fast, 10-bit, latched decimating digital
input that drives 12 high voltage outputs. 10-bit input words are
loaded into 12 separate high speed, bipolar DACs sequentially.
Flexible digital input format allows several AD8385s to be used
in parallel in high resolution displays. The output signal can be
adjusted for dc reference, signal inversion, and contrast for
maximum flexibility. Integrated level shifters convert timing
signals from a 3 V timing controller to high voltage for LCD
panel timing inputs. Two, serial, 8-bit DACs are integrated to
provide dc reference signals. A 3-wire serial interface controls
overload protection, output mode, and the serial DACs.
The AD8385 is fabricated on ADI’s fast bipolar, 26 V XFHV
process, which provides fast input logic, bipolar DACs with
trimmed accuracy and fast settling, high voltage, precision drive
amplifiers on the same chip.
The AD8385 dissipates 1.84 W nominal static power.
The AD8385 is offered in a 100-lead, 14 mm × 14 mm TQFP
E-pad package and operates over the commercial temperature
range of 0°C to 85°C.
FUNCTIONAL BLOCK DIAGRAM
BYP
DYIN
DIRYIN
DIRXIN
NRGIN
DXIN
ENBX1I
ENBX2I
ENBX3I
ENBX4I
CLXIN
CLYIN
MONITI
SVRH
SVRL
SVRL
SDI
SCL
SEN
VRH
VRH
VRL
R/L
CLK
STSQ
XFR
DB(0:9)
INV
V1
V2
TSTM
CLX
CLY
CLXN
CLYN
MONITO
AD8385
VAO1
VAO2
VID0
VID1
VID2
VID3
VID4
VID5
VID6
VID7
VID8
VID9
VID10
VID11
DY
DIRY
DIRX
NRG
DX
ENBX1
ENBX2
ENBX3
ENBX4
SCALING
CONTROL
SEQUENCE
CONTROL
BIAS
DACs
2-STAGE
LATCH
INV
CONTROL
12-BIT
SHIFT
REGISTER
DUAL
DAC
S
R
9/
2/
3/
3/
3/
4/
10/
9/
2/
2/
12/
Figure 1.


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