AD9949
TABLE OF CONTENTS
Specifications..................................................................................... 3
Individual HBLK Sequences..................................................... 21
Generating Special HBLK Patterns.............................................. 23
Horizontal Sequence Control................................................... 23
External HBLK Signal................................................................ 23
H-Counter Synchronization ..................................................... 24
Power-Up Procedure...................................................................... 25
Recommended Power-Up Sequence ....................................... 25
Analog Front End Description and Operation .......................... 26
DC Restore .................................................................................. 26
Correlated Double Sampler ...................................................... 26
PxGA............................................................................................ 26
Variable Gain Amplifier ............................................................ 29
ADC ............................................................................................. 29
Optical Black Clamp.................................................................. 29
Digital Data Outputs.................................................................. 29
Applications Information.............................................................. 30
Circuit Configuration................................................................ 30
Grounding and Decoupling Recommendations.................... 30
Driving the CLI Input................................................................ 31
Horizontal Timing Sequence Example.................................... 31
Outline Dimensions....................................................................... 34
Ordering Guide .......................................................................... 34
General Specifications ................................................................. 3
Digital Specifications ................................................................... 3
Analog Specifications................................................................... 4
Timing Specifications .................................................................. 5
Absolute Maximum Ratings............................................................ 6
Thermal Characteristics .............................................................. 6
ESD Caution.................................................................................. 6
Pin Configuration and Function Descriptions............................. 7
Terminology ...................................................................................... 8
Equivalent Input/Output Circuits .................................................. 9
Typical Performance Characteristics ........................................... 10
System Overview ............................................................................ 11
H-Counter Behavior .................................................................. 11
Serial Interface Timing .................................................................. 12
Complete Register Listing ............................................................. 13
Precision Timing High Speed Timing Generation...................... 18
Timing Resolution...................................................................... 18
High Speed Clock Programmability........................................ 18
H-Driver and RG Outputs ........................................................ 19
Digital Data Outputs.................................................................. 19
Horizontal Clamping and Blanking............................................. 21
Individual CLPOB and PBLK Sequences................................ 21
REVISION HISTORY
11/04—Data Sheet Changed from Rev. A to Rev. B
Changes to Ordering Guide .......................................................... 35
9/04—Data Sheet Changed from Rev. 0 to Rev. A
Changes to Table 12 ....................................................................... 17
Changes to Table 15 ....................................................................... 17
Changes to H-Counter Sync Section ........................................... 24
Changes to Recommended Power-Up Sequence Section......... 25
Changes to Ordering Guide.......................................................... 35
Changes to Features.......................................................................... 1
Changes to Analog Specifications .................................................. 4
Changes to Terminology Section.................................................... 9
Added H-Counter Behavior Section............................................ 12
Changes to Table 7.......................................................................... 14
5/03—Revision 0: Initial Version
Rev. B | Page 2 of 36
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