AD8384ASVZ Analog Devices Inc, AD8384ASVZ Datasheet

IC DRIVER LCD 6CH 10BIT 80-TQFP

AD8384ASVZ

Manufacturer Part Number
AD8384ASVZ
Description
IC DRIVER LCD 6CH 10BIT 80-TQFP
Manufacturer
Analog Devices Inc
Series
DecDriver™r
Datasheet

Specifications of AD8384ASVZ

Display Type
LCD
Interface
3-Wire Serial
Current - Supply
40mA
Voltage - Supply
9 V ~ 18 V
Operating Temperature
0°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
80-TQFP Exposed Pad, 80-eTQFP, 80-HTQFP, 80-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Configuration
-
Digits Or Characters
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD8384ASVZ
Manufacturer:
Analog Devices Inc
Quantity:
10 000
PRODUCT FEATURES
High accuracy, high resolution voltage outputs
Fast settling, high voltage drive
Outputs to within 1.3 V of supply rails
High update rates
Fast, 100 Ms/s 10-bit input data update rate
Voltage controlled video reference (brightness), offset, and
Flexible logic
STSQ/XFR allow parallel AD8384 operation
INV bit reverses polarity of video signal
Output short-circuit protection
3.3 V logic, 9 V to 18 V analog supplies
18 V level shifters for panel timing signals
Available in 80-lead 12 mm × 12 mm TQFP E-pad
APPLICATIONS
LCD analog column drivers
PRODUCT DESCRIPTION
The AD8384 DecDriver provides a fast, 10-bit, latched,
decimating digital input that drives six high voltage outputs.
10-bit input words are loaded sequentially into six separate high
speed, bipolar DACs. Flexible digital input format allows several
AD8384s 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 input, 8-bit
DACs are integrated to provide dc reference signals. DAC
addresses and 8-bit data are loaded in one 12-bit serial word.
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.
10-bit input resolution
Laser trimmed outputs
30 ns settling time to 0.25% into a 150 pF load
Slew rate 460 V/µs
full-scale (contrast) output levels
LCD DecDriver
The AD8384 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 AD8384 dissipates 1.1 W nominal static power.
The AD8384 is offered in an 80-lead 12 mm × 12 mm TQFP
E-pad package and operates over the 0°C to 85°C commercial
temperature range.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
ENBX1IN
ENBX2IN
ENBX3IN
ENBX4IN
DB(0:9)
MONITI
DIRYIN
DIRXIN
NRGIN
CLXIN
CLYIN
STSQ
TSTM
SVRH
SVRL
DYIN
DXIN
10-Bit, 6-Channel Decimating
VRH
BYP
VRL
CLK
XFR
SCL
SEN
INV
SDI
R/L
V1
V2
10
2
4
/
/
/
FUNCTIONAL BLOCK DIAGRAM
3
2
9
2
/
/
/
/
BIAS
SEQUENCE
CONTROL
© 2004 Analog Devices, Inc. All rights reserved.
CONTROL
SCALING
®
2-STAGE
LATCH
REGISTER
CONTROL
with Level Shifters
12-BIT
SHIFT
INV
Figure 1.
R
S
DACs
DUAL
DAC
www.analog.com
AD8384
AD8384
9
2
2
/
/
/
6
/
VID0
VID1
VID2
VID3
VID4
VID5
VAO1
VAO2
DY
DX
DIRY
DIRX
NRG
ENBX1
ENBX2
ENBX3
ENBX4
CLX
CLY
CLXN
CLYN
MONITO

Related parts for AD8384ASVZ

AD8384ASVZ Summary of contents

Page 1

PRODUCT FEATURES High accuracy, high resolution voltage outputs 10-bit input resolution Laser trimmed outputs Fast settling, high voltage drive 30 ns settling time to 0.25% into a 150 pF load Slew rate 460 V/µs Outputs to within 1 ...

Page 2

AD8384 TABLE OF CONTENTS Specifications..................................................................................... 3 DecDriver ...................................................................................... 3 Level Shifters ................................................................................. 5 Level Shifting Edge Detector ...................................................... 5 Serial Interface .............................................................................. 6 Power Supplies .............................................................................. 7 Operating Temperature ............................................................... 7 Absolute Maximum Ratings............................................................ 8 Maximum Power Dissipation ..................................................... 8 ...

Page 3

SPECIFICATIONS DecDriver Table 1. @ 25°C, AVCC = 15.5 V, DVCC = 3 unless otherwise noted Parameter 1 VIDEO DC PERFORMANCE VDE VCME VIDEO OUTPUT DYNAMIC PERFORMANCE Data Switching Slew Rate Invert Switching Slew Rate Data Switching Settling ...

Page 4

AD8384 DecDriver (continued) Parameter DIGITAL INPUT CHARACTERISTICS Max. Input Data Update Rate CLK to Data Setup Time CLK to STSQ Setup Time CLK to XFR Setup Time CLK to Data Hold Time ...

Page 5

LEVEL SHIFTERS Table 2. @ 25°C, AVCC = 15.5 V, DVCC = 3 unless otherwise noted Parameter LEVEL SHIFTER LOGIC INPUTS LEVEL SHIFTER OUTPUTS V OH ...

Page 6

AD8384 SERIAL INTERFACE Table 4. @ 25°C, AVCC = 15.5 V, DVCC = 3 Parameter SERIAL DAC REFERENCE INPUTS SVRH Range SVRL Range SVFS Range SVRH Input Current SVRL Input Current SVRH Input Resistance SERIAL DAC ACCURACY DNL ...

Page 7

POWER SUPPLIES Table 5. @ 25°C, AVCC = 15.5 V, DVCC = 3 Parameter DVCC, Operating Range DVCC, Quiescent Current AVCC Operating Range Total AVCC Quiescent Current OPERATING TEMPERATURE Parameter 7 Ambient Temperature Range Ambient Temperature ...

Page 8

AD8384 ABSOLUTE MAXIMUM RATINGS 9 Table 6. AD8384 Stress Ratings Parameter Supply Voltages AVCCx – AGNDx DVCC – DGND Input Voltages Maximum Digital Input Voltage Minimum Digital Input Voltage Maximum Analog Input Voltage Minimum Analog Input Voltages 10 Internal Power ...

Page 9

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS DGND TSTM CLK XFR STSQ INV R/L E/O SDI SEN SCL NC AGNDS SVRL SVRH VAO1 VAO2 AVCCS DIRXIN DIRYIN CONNECT Table 7. Pin Function Descriptions Pin Name Function DB(0:9) Data Input ...

Page 10

AD8384 Pin Name Function INV Invert DVCC Digital Power Supply DGND Digital Ground AVCCx Analog Power Supplies AGNDx Analog Ground SVRH, SVRL Serial DAC Reference Voltages SCL Serial Data Clock SDI Data Input SEN Serial DAC Enable VAO1, VAO2 Serial ...

Page 11

TIMING CHARACTERISTICS DECDRIVER SECTION 2-STAGE DAC DB(0:9) LATCH 10 10 2-STAGE AD8384 DAC LATCH 10 10 2-STAGE DAC LATCH BYP BIAS 10 10 2-STAGE DAC LATCH CLK STSQ SEQUENCE 10 10 2-STAGE DAC CONTROL XFR LATCH ...

Page 12

AD8384 LEVEL SHIFTER SECTION DYIN DXIN DIRYIN DIRXIN NRGIN ENBX1IN ENBX2IN ENBX3IN ENBX4IN Figure 8. Level Shifter—Inverting INPUTS INVERTING OUTPUTS NONINVERTING OUTPUTS Table 9. Level Shifter Timing Parameter Output Rise, Fall Times DX, CLX, CLXN, ...

Page 13

LEVEL SHIFTING EDGE DETECTOR MONITI MONITO Table 10. Level Shifting Edge Detector, AVCC = 15.5 V, DVCC = 3 Parameter V Input Low Voltage IL V Input High Voltage Input Rising Edge Threshold Voltage TH ...

Page 14

AD8384 SERIAL INTERFACE SVRH SVRL SDI 12-BIT SHIFT REGISTER SCL SEN SD0 SD1 SD2 SD3 SD4 SD5 SD6 SD7 SD8 SD9 SD10 SD11 ENABLE THERMAL SWITCH VIDEO DACs TSTM SEN SCL SDI VAO1, VAO2 SEN SCL SDI VAO1, VAO2 Table ...

Page 15

FUNCTIONAL DESCRIPTION The AD8384 is a system building block designed to directly drive the columns of LCD microdisplays of the type popularized for use in projection systems. It comprises six channels of precision, 10-bit digital-to-analog converters loaded from a single, ...

Page 16

AD8384 ACCURACY To best correlate transfer function errors to image artifacts, the overall accuracy of the DecDriver is defined by two parameters: VDE and VCME. VDE, the differential error voltage, measures the difference between the rms value of the output ...

Page 17

APPLICATIONS IMAGE PROCESSOR 1/3 AD8389 DXI, CLXI, ENBX(1–4)I CLK POWER SUPPLY SEQUENCING As indicated under the Absolute Maximum Ratings, the voltage at any input pin cannot exceed its supply voltage by more than 0 ensure compliance with the ...

Page 18

AD8384 VBIAS GENERATION—V1, V2 INPUT PIN FUNCTIONALITY In order to avoid image flicker, a symmetrical ac voltage is required and a bias voltage of approximately 1 V minimum must be maintained across the pixels of HTPS LCDs. The AD8384 provides ...

Page 19

PCB DESIGN FOR OPTIMIZED THERMAL PERFORMANCE The AD8384’s total maximum power dissipation is partly load dependent 6-channel 60Hz XGA system running MHz clock rate, the total maximum power dissipation is 1 150 ...

Page 20

AD8384 AD8384 PCB DESIGN RECOMMENDATIONS Top PCB Layer Land Pattern Dimensions Pad Size: 0.6 mm × 0.25 mm Pad Pitch: 0.5 mm Thermal Pad Size × Thermal via structure: 0. 0.35 mm diameter via ...

Page 21

... ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. ORDERING GUIDE Model Temperature Range 11 AD8384ASVZ 0°C to 85° Pb-free part. 14.00 SQ 12. ...

Page 22

AD8384 NOTES Rev Page ...

Page 23

NOTES Rev Page AD8384 ...

Page 24

AD8384 NOTES © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D04512–0–1/04(0) Rev Page ...

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