Document
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: 1.4 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 High accuracy voltage outputs
Laser trimming eliminates the need for adjustments or calibration
Flexible logic XFR allows parallel AD8386 operation
Fast settling into capacitive loads 35 ns settling time to 0.25% into 150 pF load Slew rate 400 V/μs
Available in 64-lead 9 mm × 9 mm LFCSP_VQ
GENERAL DESCRIPTION
The AD8386 provides a fast, 10-bit, latched, decimating digital input that drives 12 high voltage outputs. Input words with 10 bits are loaded sequentially into 12 separate high speed, bipolar DACs. Flexible digital input format allows several AD8386s 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.
The AD8386 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 AD8386 dissipates 1.4 W nominal static power.
The AD8386 is offered in a 64-lead 9 mm × 9 mm LFCSP_VQ package and operates over the commercial temperature range of 0°C to 85°C.
10-Bit, 12-Channel Output Decimating LCD Driver AD8386
FUNCTIONAL BLOCK DIAGRAM
BYP
VRH 2 VRH VRL
10 DB(0:9)
R/L
3
CLK
XFR
INV
GCTL 3
GSW TSW
SDI 3
SCL SEN
SVRH
2
SVRL
SVRL
BIAS
SCALING CONTROL
TWO-STAGE 10-BIT
LATCH
DACs
SEQUENCE CONTROL
INV CONTROL
12-BIT SHIFT REGISTER
8-BIT DAC
Figure 1.
VID0 VID1 VID2 VID3 VID4 12 VID5 VID6 VID7 VID8 VID9 VID10 VID11
VAO
AD8386
05687-001
Rev. 0
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AD8386
TABLE OF CONTENTS
Features .............................................................................................. 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3
DecDriver® Section ....................................................................... 3 Serial Interface Section ................................................................ 5 Absolute Maximum Ratings............................................................ 6 Maximum Power Dissipation ..................................................... 6 Overload Protection..................................................................... 6 Exposed Paddle............................................................................. 6 ESD Caution.................................................................................. 6 Operating Temperature Range ................................................... 7 Pin Configuration and Function Descriptions............................. 8 DecDriver Block Diagram and Timing ........................................ 10 Serial Interface Block Diagram and Timing ............................... 12 Functional Description .................................................................. 13
REVISION HISTORY
8/05—Revision 0: Initial Version
Reference and Control Input Descriptions............................. 13 Transfer Function and Analog Output Voltage...................... 13 Accuracy ...................................................................................... 14 3-Wire Serial Interface............................................................... 14 Output Operating Modes.......................................................... 14 Overload Protection................................................................... 14 Applications..................................................................................... 15 Optimized Reliability with the Thermal Protection Circuit 15 Operation in High Ambient Temperature .............................. 15 Power Supply Sequencing ......................................................... 15 Gro.