AD9645 Просмотр технического описания (PDF) - Analog Devices

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AD9645

Dual, 14-Bit, 80 MSPS/125 MSPS, Serial LVDS 1.8 V Analog-to-Digital Converter

Analog Devices 

AD9645

TABLE OF CONTENTS

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

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

General Description ......................................................................... 1

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

Product Highlights ........................................................................... 1

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

Specifications..................................................................................... 3

DC Specifications ......................................................................... 3

AC Specifications.......................................................................... 4

Digital Specifications ................................................................... 5

Switching Specifications .............................................................. 6

Timing Specifications .................................................................. 6

Absolute Maximum Ratings.......................................................... 10

Thermal Resistance .................................................................... 10

ESD Caution................................................................................ 10

Pin Configuration and Function Descriptions........................... 11

Typical Performance Characteristics ........................................... 12

AD9645-80 .................................................................................. 12

AD9645-125 ................................................................................ 15

Equivalent Circuits ......................................................................... 18

Theory of Operation ...................................................................... 19

Analog Input Considerations.................................................... 19

Voltage Reference ....................................................................... 20

Clock Input Considerations ...................................................... 21

REVISION HISTORY

10/15—Rev. A to Rev. B

Changed AD9516 to AD9516-0/AD9516-1/AD9516-2/

AD9516-3/AD9516-4/AD9516-5, and AD9517 to AD9517-0/

AD9517-1/AD9517-2/AD9517-3/AD9517-4 ............ Throughout

Changes to General Description .................................................... 1

Added Endnote 4, Table 4................................................................ 6

Changes to Digital Outputs and Timing Section ....................... 24

8/14—Rev. 0 to Rev. A

Added Propagation Delay Parameters of 1.5 ns (min)

and 3.1 ns (max), Table 4 ................................................................. 6

Changes to Figure 3 .......................................................................... 7

Changes to Figure 5 .......................................................................... 8

Changes to Pin 21 Description ..................................................... 11

Data Sheet

Power Dissipation and Power-Down Mode ........................... 22

Digital Outputs and Timing ..................................................... 23

Output Test Modes..................................................................... 26

Serial Port Interface (SPI).............................................................. 27

Configuration Using the SPI..................................................... 27

Hardware Interface..................................................................... 28

Configuration Without the SPI ................................................ 28

SPI Accessible Features.............................................................. 28

Memory Map .................................................................................. 29

Reading the Memory Map Register Table............................... 29

Memory Map Register Table..................................................... 30

Memory Map Register Descriptions........................................ 33

Applications Information .............................................................. 35

Design Guidelines ...................................................................... 35

Power and Ground Guidelines ................................................. 35

Clock Stability Considerations ................................................. 35

Exposed Pad Thermal Heat Slug Recommendations............ 35

VCM............................................................................................. 35

Reference Decoupling................................................................ 35

SPI Port ........................................................................................ 35

Outline Dimensions ....................................................................... 36

Ordering Guide .......................................................................... 36

Changes to Voltage Reference Section......................................... 20

Changes to Table 10 and Table 11 ................................................ 25

Changes to First Paragraph of Serial Port Interface (SPI)

Section.............................................................................................. 27

Changes to SPI Accessible Features Section ............................... 28

Changes to Output Phase (Register 0x16) Bits[6:4]—Input

Clock Phase Adjust Section........................................................... 33

Changes to Resolution/Sample Rate Override (Register 0x100)

Section and User I/O Control 3 (Register 0x102) Bit 3—VCM

Power-Down Section ..................................................................... 34

Added Clock Stability Considerations Section........................... 35

6/12—Revision 0: Initial Version

Rev. B | Page 2 of 36

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