AD9272-80 데이터 시트보기 (PDF) - Analog Devices

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AD9272-80

Octal LNA/VGA/AAF/ADC and Crosspoint Switch

Analog Devices 

AD9272

TABLE OF CONTENTS

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

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

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

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

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

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

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

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

Digital Specifications ................................................................... 8

Switching Specifications .............................................................. 9

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

Thermal Impedance ................................................................... 11

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

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

Typical Performance Characteristics ........................................... 15

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

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

REVISION HISTORY

7/09—Rev. B to Rev. C

Changes to Input Overload Protection Section and Figure 43 .......25

Changes to Digital Outputs and Timing Section and Changes

to Figure 63...................................................................................... 33

Changes to Hardware Interface Section ...................................... 39

6/09—Rev. A to Rev. B

Changes to Product Highlights Section......................................... 3

Changes to Table 1............................................................................ 4

Changes to Absolute Maximum Ratings Table........................... 11

Changes to Figure 22...................................................................... 17

Changes to Figure 33 and Figure 34............................................. 20

Changes to Low Noise Amplifier (LNA) Section....................... 22

Changes to Active Impedance Matching Section....................... 23

Changes to Figure 39...................................................................... 23

Changes to LNA Noise Section..................................................... 24

Changes to Figure 47...................................................................... 28

Changes to Figure 48 and Figure 49............................................. 29

Changes to CSB Pin Section.......................................................... 36

Changes to Reading the Memory Map Table Section................ 40

4/09—Revision A: Initial Version

Ultrasound .................................................................................. 21

Channel Overview ..................................................................... 22

Input Overdrive .......................................................................... 25

CW Doppler Operation............................................................. 25

TGC Operation........................................................................... 27

ADC ............................................................................................. 31

Clock Input Considerations...................................................... 31

Serial Port Interface (SPI).............................................................. 38

Hardware Interface..................................................................... 38

Memory Map .................................................................................. 40

Reading the Memory Map Table.............................................. 40

Reserved Locations .................................................................... 40

Default Values ............................................................................. 40

Logic Levels ................................................................................. 40

Outline Dimensions ....................................................................... 44

Ordering Guide .......................................................................... 44

Rev. C | Page 2 of 44

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