AD9694 datasheet(2/101 Pages) AD

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AD9694

Data Sheet

Rev. 0 | Page 2 of 101

TABLE OF CONTENTS

\Features.......................................................................................................1

Applications ................................................................................................1

Functional Block Diagram.......................................................................1

Revision History.........................................................................................2

General Description..................................................................................3

Product Highlights ....................................................................................3

Specifications ..............................................................................................4

DC Specifications..................................................................................4

AC Specifications...................................................................................5

Digital Specifications ............................................................................7

Switching Specifications.......................................................................8

Timing Specifications...........................................................................9

Absolute Maximum Ratings..................................................................11

Thermal Resistance.............................................................................11

ESD Caution.........................................................................................11

Pin Configuration and Function Descriptions ..................................12

Typical Performance Characteristics....................................................14

Equivalent Circuits ..................................................................................21

Theory of Operation ...............................................................................23

ADC Architecture...............................................................................23

Analog Input Considerations............................................................23

Voltage Reference ................................................................................24

DC Offset Calibration ........................................................................25

Clock Input Considerations ..............................................................25

ADC Overrange and Fast Detect..........................................................28

ADC Overrange...................................................................................28

Fast Threshold Detection (FD_A, FD_B, FD_C, and FD_D)....28

Signal Monitor ................................................................................ 29

SPORT Over JESD204B............................................................. 29

Digital Downconverter (DDC)..................................................... 32

DDC I/Q Input Selection .......................................................... 32

DDC I/Q Output Selection ....................................................... 32

DDC General Description ........................................................ 32

Frequency Translation ................................................................... 38

General Description................................................................... 38

DDC NCO and Mixer Loss and SFDR.................................... 39

Numerically Controlled Oscillator........................................... 39

FIR Filters ........................................................................................ 41

Overview ..................................................................................... 41

Half-Band Filters ........................................................................ 42

DDC Gain Stage ......................................................................... 43

DDC Complex to Real Conversion ......................................... 43

DDC Example Configurations ................................................. 44

Digital Outputs ............................................................................... 49

Introduction to the JESD204B Interface ................................. 49

Setting Up the AD9694 Digital Interface................................ 49

Functional Overview ................................................................. 51

JESD204B Link Establishment ................................................. 51

Physical Layer (Driver) Outputs .............................................. 52

JESD204B Tx Converter Mapping........................................... 53

Configuring the JESD204B Link.............................................. 55

Latency............................................................................................. 59

End-to-End Total Latency......................................................... 59

Multichip Synchronization............................................................ 60

SYSREF± Set up and Hold Window Monitor ........................ 62

Test Modes....................................................................................... 64

ADC Test Modes ........................................................................ 64

JESD204B Block Test Modes .................................................... 65

Serial Port Interface........................................................................ 67

Configuration Using the SPI..................................................... 67

Hardware Interface..................................................................... 67

SPI Accessible Features.............................................................. 67

Memory Map .................................................................................. 68

Reading the Memory Map Register Table............................... 68

Memory Map .................................................................................. 69

Memory Map Register Table—Details .................................... 75

Applications Information ............................................................ 100

Power Supply Recommendations........................................... 100

Exposed Pad Thermal Heat Slug Recommendations.......... 100

AVDD1_SR (Pin 64) and AGND_SR (Pin 63 and Pin 67) ..... 100

Outline Dimensions..................................................................... 101

Ordering Guide ........................................................................ 101

REVISION HISTORY

10/2016—Revision 0: Initial Version

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