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AD9991

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TABLE OF CONTENTS

SPECIFICATIONS ............................................................... 3

Digital Speciﬁcations .......................................................... 3

Analog Speciﬁcations ........................................................... 4

Timing Speciﬁcations ........................................................... 5

ABSOLUTE MAXIMUM RATINGS ..................................... 5

PACKAGE THERMAL CHARACTERISTICS ...................... 5

ORDERING GUIDE ............................................................. 5

PIN CONFIGURATION ....................................................... 6

PIN FUNCTION DESCRIPTIONS....................................... 6

TERMINOLOGY .................................................................. 7

EQUIVALENT CIRCUITS .................................................... 7

TYPICAL PERFORMANCE CHARACTERISTICS ............. 8

SYSTEM OVERVIEW............................................................ 9

PRECISION TIMING HIGH SPEED TIMING

GENERATION .................................................................... 10

Timing Resolution ............................................................. 10

High Speed Clock Programmability.................................... 10

H-Driver and RG Outputs ................................................. 11

Digital Data Outputs ........................................................ 11

HORIZONTAL CLAMPING AND BLANKING ................. 13

Individual CLPOB and PBLK Patterns .............................. 13

Individual HBLK Patterns ................................................. 13

Generating Special HBLK Patterns .................................... 14

Generating HBLK Line Alteration ..................................... 14

HORIZONTAL TIMING SEQUENCE EXAMPLE ............. 15

VERTICAL TIMING GENERATION ................................. 16

Vertical Pattern Groups ...................................................... 17

Vertical Sequences.............................................................. 18

Complete Field: Combining V-Sequences ........................... 19

Generating Line Alternation for V-Sequence and HBLK...... 20

Second V-Pattern Group during VSG Active Line................ 20

Sweep Mode Operation...................................................... 21

Multiplier Mode ................................................................ 21

Vertical Sensor Gate (Shift Gate) Patterns ........................... 22

MODE Register ................................................................ 23

VERTICAL TIMING EXAMPLE ....................................... 24

Important Note about Signal Polarities ............................... 24

SHUTTER TIMING CONTROL ........................................ 26

Normal Shutter Operation ................................................. 26

High Precision Shutter Operation....................................... 26

Low Speed Shutter Operation ............................................ 26

SUBCK Suppression ......................................................... 27

Readout after Exposure...................................................... 27

Using the TRIGGER Register ............................................ 27

VSUB Control ................................................................... 28

MSHUT and STROBE Control ........................................ 28

TRIGGER Register Limitations ......................................... 29

EXPOSURE AND READOUT EXAMPLE.......................... 30

ANALOG FRONT END DESCRIPTION

AND OPERATION ......................................................... 31

DC Restore ..................................................................... 31

Correlated Double Sampler............................................... 31

Variable Gain Ampliﬁer .................................................... 31

A/D Converter .................................................................. 31

Optical Black Clamp......................................................... 3

Digital Data Outputs ......................................................... 32

POWER-UP AND SYNCHRONIZATION........................... 33

Recommended Power-Up Sequence for Master Mode......... 33

Generating Software SYNC without

External SYNC Signal ................................................... 33

SYNC during Master Mode Operation............................... 3

Power-Up and Synchronization in Slave Mode.................... 34

STANDBY MODE OPERATION ........................................ 34

CIRCUIT LAYOUT INFORMATION ................................. 36

SERIAL INTERFACE TIMING........................................... 37

Updating of New Register Values ........................................ 39

COMPLETE LISTING OF REGISTER BANK 1 ............... 40

COMPLETE LISTING OF REGISTER BANK 2 ............... 43

OUTLINE DIMENSIONS.................................................. 59

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