AD9985_15 Datasheet, PDF (2/32 Pages) Analog Devices – 110 MSPS/140 MSPS Analog Interface for Flat Panel Displays

AD9985
TABLE OF CONTENTS
Revision History ........................................................................... 2
Specifications..................................................................................... 3
Explanation of Test Levels........................................................... 6
Absolute Maximum Ratings............................................................ 7
ESD Caution.................................................................................. 7
Pin Configuration and Function Descriptions............................. 8
Design Guide................................................................................... 11
General Description................................................................... 11
Digital Inputs .............................................................................. 11
Input Signal Handling................................................................ 11
Hsync, Vsync Inputs................................................................... 11
Serial Control Port ..................................................................... 11
Output Signal Handling............................................................. 11
Clamping ..................................................................................... 11
RGB Clamping........................................................................ 11
YUV Clamping ....................................................................... 12
Gain and Offset Control............................................................ 12
Auto Offset .............................................................................. 12
Sync-on-Green............................................................................ 13
Clock Generation ....................................................................... 13
Power Management.................................................................... 14
Timing.......................................................................................... 15
Hsync Timing ............................................................................. 15
Coast Timing............................................................................... 15
REVISION HISTORY
5/04—Revision 0: Initial Version
2-Wire Serial Register Map ....................................................... 16
2-Wire Serial Control Register Detail Chip Identification... 19
PLL Divider Control .................................................................. 19
Clock Generator Control .......................................................... 19
Clamp Timing............................................................................. 20
Hsync Pulsewidth....................................................................... 20
Input Gain ................................................................................... 20
Input Offset ................................................................................. 20
Mode Control 1 .......................................................................... 21
2-Wire Serial Control Port........................................................ 26
Data Transfer via Serial Interface............................................. 26
Sync Slicer.................................................................................... 28
Sync Separator ............................................................................ 28
PCB Layout Recommendations ............................................... 29
Analog Interface Inputs ............................................................. 29
Power Supply Bypassing ............................................................ 29
PLL ............................................................................................... 30
Outputs (Both Data and Clocks).............................................. 30
Digital Inputs .............................................................................. 30
Voltage Reference ....................................................................... 30
Outline Dimensions ....................................................................... 31
Ordering GuIde .......................................................................... 31
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