AD9864 Просмотр технического описания (PDF) - Analog Devices

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AD9864

IF Digitizing Subsystem

Analog Devices 

AD9864

TABLE OF CONTENTS

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

AD9864 Specifications..................................................................... 4

Digital Specifications........................................................................ 6

Absolute Maximum Ratings............................................................ 7

Thermal Resistance ...................................................................... 7

Pin Configuration and Functional Descriptions.......................... 8

Definition of Specifications/Test Methods ............................... 9

Typical Performance Characteristics ........................................... 10

Serial Peripheral Interface (SPI) ............................................... 15

Theory of Operation ...................................................................... 17

Serial Port Interface (SPI).......................................................... 17

Synchronous Serial Interface (SSI)........................................... 18

Syncronization Using SYNCB .................................................. 22

Interfacing to DSPs..................................................................... 22

Power Control............................................................................. 23

LO Synthesizer ............................................................................ 23

Fast Acquire Mode...................................................................... 24

Clock Synthesizer ....................................................................... 24

REVISION HISTORY

Revision 0: Initial Version

IF LNA/Mixer ............................................................................. 26

Band-Pass ∑-∆ ADC .................................................................. 27

Decimation Filter ....................................................................... 29

Variable Gain Amplifier Operation With Automatic Gain

Control......................................................................................... 30

Variable Gain Control................................................................ 31

Automatic Gain Control (AGC)............................................... 32

System Noise Figure (NF) Versus VGA (or AGC) Control .. 34

Applications Considerations..................................................... 35

Spurious Responses.................................................................... 37

External Passive Component Requirements .......................... 37

Applications ................................................................................ 38

Layout Example, Evaluation Board, and Software ................. 42

Outline Dimensions ....................................................................... 43

ESD Caution................................................................................ 43

Ordering Guide .......................................................................... 43

Rev. 0 | Page 2 of 44

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