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Analog Devices Semiconductor Electronic Components Datasheet

AD8389 Datasheet

6-Channel LCD Timing Delay-Locked Loop

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Triple, 6-Channel LCD Timing
Delay-Locked Loop
AD8389
PRODUCT FEATURES
High speed
Up to 85 MHz clock rate
Triple (R, G, B) output
Matched delay lines
Low power dissipation: 40 mW
Reference to rising or falling edge of MONITI input
Selectable loop delay
Available in 48-lead 7 mm × 7 mm LFCSP
APPLICATIONS
LCD microdisplay horizontal timing
PRODUCT DESCRIPTION
The AD8389 is a triple 6-channel LCD microdisplay delay-
locked timing loop. As part of a closed-loop system, the AD8389
maintains a constant delay between the common input, DXI,
and each independent feedback reference, MONITxI.
The AD8389 consists of a selectable fixed delay element, a phase
detector, a charge pump, and six matched variable delay lines
per color. The phase detector, charge pump, and master delay
line form a closed loop when connected to a compatible LCD
microdisplay. Five additional delay lines track the master for a
complete set of matched timing signals.
The AD8389 dissipates 40 mW nominal power. The AD8389 is
offered in a 48-lead 7 mm × 7 mm LFCSP package and operates
over the commercial temperature range of 0°C to 85°C.
COMPEDGE
SLOW
DXI
ENBX1I
ENBX2I
ENBX3I
ENBX4I
CLXI
CLK
FUNCTIONAL BLOCK DIAGRAM
AVDD(4) AVSS(4)
DRVDD(2) DRVSS(2)
SELECTABLE
DELAY
PHASE
DETECTOR
CHARGE
PUMP
AD8389
MATCHED VARIABLE
DELAY LINES (6-CHANNEL)
6/
/6
PHASE
CHARGE
DETECTOR
PUMP
MATCHED VARIABLE
DELAY LINES (6-CHANNEL)
6/
PHASE
DETECTOR
CHARGE
PUMP
INTERNAL
TIMING
MATCHED VARIABLE
DELAY LINES (6-CHANNEL)
6/
VCONTR
MONITRI
DXRO
ENBX1RO
ENBX2RO
ENBX3RO
ENBX4RO
CLXRO
VCONTG
MONITGI
DXGO
ENBX1GO
ENBX2GO
ENBX3GO
ENBX4GO
CLXGO
VCONTB
MONITBI
DXBO
ENBX1BO
ENBX2BO
ENBX3BO
ENBX4BO
CLXBO
Figure 1.
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 © 2003 Analog Devices, Inc. All rights reserved.


Analog Devices Semiconductor Electronic Components Datasheet

AD8389 Datasheet

6-Channel LCD Timing Delay-Locked Loop

No Preview Available !

AD8389
TABLE OF CONTENTS
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 4
Exposed Paddle............................................................................. 4
Maximum Power Dissipation ..................................................... 4
Pin Configuration and Function Descriptions............................. 5
REVISION HISTORY
Revision 0: Initial Version
Timing.................................................................................................6
Operating Principles .........................................................................7
Operation .......................................................................................7
Outline Dimensions ..........................................................................9
Ordering Guide .............................................................................9
Rev. 0 | Page 2 of 12


Part Number AD8389
Description 6-Channel LCD Timing Delay-Locked Loop
Maker Analog Devices
Total Page 12 Pages
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