AD9697 datasheet(2/130 Pages) AD

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AD9697

Data Sheet

Rev. 0 | Page 2 of 130

TABLE OF CONTENTS

Features .............................................................................................. 1

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

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

Revision History ............................................................................... 3

General Description ......................................................................... 4

Product Highlights ........................................................................... 4

Specifications..................................................................................... 5

DC Specifications ......................................................................... 5

AC Specifications.......................................................................... 6

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

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

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

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

Thermal Characteristics ............................................................ 11

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

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

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

Equivalent Circuits......................................................................... 19

Theory of Operation ...................................................................... 21

ADC Architecture ...................................................................... 21

Analog Input Considerations.................................................... 21

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

DC Offset Calibration................................................................ 24

Clock Input Considerations...................................................... 24

Power-Down/Standby Mode..................................................... 27

Temperature Diode .................................................................... 27

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

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

Fast Threshold Detection (FD)................................................. 28

ADC Application Modes and JESD204B Tx Converter Mapping

........................................................................................................... 29

Programmable Finite Impulse Response (FIR) Filters .............. 31

Supported Modes........................................................................ 31

Programming Instructions........................................................ 32

Digital Downconverter (DDC)..................................................... 33

DDC I/Q Output Selection ....................................................... 33

DDC General Description ........................................................ 33

DDC Frequency Translation..................................................... 36

DDC Decimation Filters............................................................ 43

DDC Gain Stage ......................................................................... 49

DDC Complex to Real Conversion ......................................... 49

DDC Mixed Decimation Settings ............................................ 50

DDC Example Configurations ................................................. 51

Signal Monitor ................................................................................ 54

SPORT over JESD204B.............................................................. 55

Digital Outputs ............................................................................... 57

Introduction to the JESD204B Interface ................................. 57

JESD204B Overview .................................................................. 57

Functional Overview ................................................................. 58

JESD204B Link Establishment ................................................. 58

Physical Layer (Driver) Outputs .............................................. 60

Setting Up the AD9697 Digital Interface................................ 61

Deterministic Latency.................................................................... 67

Subclass 0 Operation.................................................................. 67

Subclass 1 Operation.................................................................. 67

Multichip Synchronization............................................................ 69

Normal Mode.............................................................................. 69

Timestamp Mode ....................................................................... 69

SYSREF± Input ........................................................................... 71

SYSREF± Setup/Hold Window Monitor................................. 73

Latency............................................................................................. 75

End to End Total Latency.......................................................... 75

Example Latency Calculations.................................................. 75

LMFC Referenced Latency........................................................ 75

Test Modes....................................................................................... 77

ADC Test Modes ........................................................................ 77

JESD204B Block Test Modes .................................................... 78

Serial Port Interface (SPI).............................................................. 80

Configuration Using the SPI..................................................... 80

Hardware Interface..................................................................... 80

SPI Accessible Features.............................................................. 80

Memory Map .................................................................................. 81

Reading the Memory Map Register Table............................... 81

Memory Map Registers ............................................................. 82

Applications Information ............................................................ 128

Power Supply Recommendations........................................... 128

Layout GuideLines ................................................................... 129

AVDD1_SR (Pin 57) and AGND_SR (Pin 56 and Pin 60) ..... 129

Outline Dimensions..................................................................... 130

Ordering Guide ........................................................................ 130

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