ADF7020 查看數據表（PDF） - Analog Devices

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ADF7020

High Performance, ISM Band, FSK/ASK Transceiver IC

Analog Devices 

ADF7020

TABLE OF CONTENTS

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

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

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

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

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

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

Timing Characteristics..................................................................... 8

Timing Diagrams.......................................................................... 8

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

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

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

Typical Performance Characteristics ........................................... 13

Frequency Synthesizer ................................................................... 15

Reference Input........................................................................... 15

Choosing Channels for Best System Performance................. 17

Transmitter ...................................................................................... 18

RF Output Stage.......................................................................... 18

Modulation Schemes.................................................................. 18

Receiver ............................................................................................ 20

RF Front End............................................................................... 20

RSSI/AGC .................................................................................... 21

FSK Demodulators on the ADF7020 ....................................... 21

FSK Correlator/Demodulator................................................... 21

Linear FSK Demodulator .......................................................... 23

AFC .............................................................................................. 23

Automatic Sync Word Recognition ......................................... 24

Applications Information .............................................................. 25

LNA/PA Matching...................................................................... 25

Data Sheet

Image Rejection Calibration ..................................................... 26

Transmit Protocol and Coding Considerations ..................... 27

Device Programming after Initial Power-Up ......................... 27

Interfacing to Microcontroller/DSP ........................................ 27

Power Consumption and battery lifetime calculations ......... 28

Serial Interface ................................................................................ 31

Readback Format........................................................................ 31

Registers........................................................................................... 32

Register 0—N Register............................................................... 32

Register 1—Oscillator/Filter Register...................................... 33

Register 2—Transmit Modulation Register (ASK/OOK

Mode)........................................................................................... 34

Register 2—Transmit Modulation Register (FSK Mode) ..... 35

Register 2—Transmit Modulation Register (GFSK/GOOK

Mode)........................................................................................... 36

Register 3—Receiver Clock Register ....................................... 37

Register 4—Demodulator Setup Register ............................... 38

Register 5—Sync Byte Register................................................. 39

Register 6—Correlator/Demodulator Register ...................... 40

Register 7—Readback Setup Register...................................... 41

Register 8—Power-Down Test Register .................................. 42

Register 9—AGC Register......................................................... 43

Register 10—AGC 2 Register.................................................... 44

Register 11—AFC Register ....................................................... 44

Register 12—Test Register......................................................... 45

Register 13—Offset Removal and Signal Gain Register ....... 46

Outline Dimensions ....................................................................... 47

Ordering Guide .......................................................................... 47

Rev. D | Page 2 of 48

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