AD8380 Datasheet, PDF (1/16 Pages) Analog Devices – Fast, High-Voltage Drive, 6-Channel Output DecDriver Decimating LCD Panel Driver

a Fast, High-Voltage Drive, 6-Channel Output
DecDriver^™ Decimating LCD Panel Driver
AD8380
FEATURES
FUNCTIONAL BLOCK DIAGRAM
High-Voltage Drive to Within 1.3 V of Supply Rails
24 V Supply for Fast Output Voltage Drivers
AD8380
High Update Rates: Fast 75 Ms/s 10-Bit Input Word Rate
Low Power Dissipation, 550 mW with Power-Down
10
DB [0:9]
10 _2-STAGE 10
LATCH
DAC
VID0
Voltage Controlled Video Reference and Full-Scale
(Contrast) Output Levels
INV Bit Reverses Polarity of Video Signal
CLK
STSQ/CS
CHANNEL
SELECTOR
10 _2-STAGE 10
LATCH
DAC
VID1
Nominal 3.3 V Logic and 15 V Analog Supplies
Flexible Logic
XFR
10 _2-STAGE 10
LATCH
DAC
VID2
Addressable or Sequential Channel Loading
STSQ/CS Allow Parallel AD8380 Operation for XGA
and Greater Resolution
E/O
R/L
A[0:2]
3
10 _2-STAGE 10
LATCH
DAC
VID3
Drives Capacitive Loads
26 ns Settling Time to 1% Up to 150 pF Load
Slew Rate 270 V/␮s
Available in 44-Lead MQFP
STBY
BYP
BIAS
10 _2-STAGE 10
LATCH
DAC
10 _2-STAGE 10
LATCH
DAC
VID4
VID5
APPLICATIONS
Poly Si LCD Panel Analog Column Driver
VREFHI
VREFLO
SCALING
CONTROL
INV
VMID
PRODUCT DESCRIPTION
The AD8380 provides a fast, 10-bit latched decimating digital
input that drives 6-channel high voltage drive outputs. The 10-
bit input word is sequentially muxed into six separate high speed,
bipolar DACs. Flexible digital input formats allow several
AD8380s to be used in parallel for higher resolution displays.
STSQ/CS, in conjunction with 3-bit addressable channel-loading
pins, allows loading of the digital words either sequentially or
randomly, and R/L control sets loading as either left to right, or
vice versa. 6-channel high voltage output drivers drive to within
1.3 V of the rails to rated settling time. The output signal can be
adjusted for dc signal reference, signal inversion or contrast for
maximum flexibility.
The AD8380 is fabricated on ADI’s XFCB26 fast bipolar 26 V
process, providing fast input logic, trimmed accuracy bipolar
DACs and fast settling, high voltage precision drive amplifiers
on the same chip.
The AD8380 dissipates nominally 0.55 W of static power. STBY
pin reduces power to a minimum, with fast recovery.
The AD8380 is offered in a 44-lead 10 × 10 × 2.0 mm MQFP
package and operates over the commercial temperature range of
0°C to 85°C.
DecDriver is a trademark of Analog Devices, Inc.
REV. B
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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
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© Analog Devices, Inc., 2001