
AD9949
TABLE OF CONTENTS
Specifications.....................................................................................3
Rev. B | Page 2 of 36
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
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
REVISION HISTORY
1
1
/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 Features.......................................................................... 1
Changes to Analog Specifications.................................................. 4
Changes to Terminology Section.................................................... 9
Added H-Counter Behavior Section............................................12
Changes to Table 7..........................................................................14
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
5/03—Revision 0: Initial Version