ADF7020-1 View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADF7020-1

High Performance FSK/ASK Transceiver IC

Analog Devices 

ADF7020-1

TABLE OF CONTENTS

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

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

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

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

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

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

Timing Characteristics ................................................................ 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 Section.............................................................................. 20

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

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

FSK Demodulators on the ADF7020-1 ................................... 21

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

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

AFC Section ................................................................................ 23

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

Applications..................................................................................... 25

REVISION HISTORY

12/05—Revision 0: Initial Version

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

Transmit Protocol and Coding Considerations ..................... 26

Device Programming after Initial Power-Up ......................... 26

Interfacing to Microcontroller/DSP ........................................ 26

Serial Interface ................................................................................ 29

Readback Format........................................................................ 29

Register 0—N Register............................................................... 30

Register 1—Oscillator/Filter Register...................................... 31

Register 2—Transmit Modulation Register

(ASK/OOK Mode) ..................................................................... 32

Register 2—Transmit Modulation Register (FSK Mode) ..... 33

Register 2—Transmit Modulation Register

(GFSK/GOOK Mode)................................................................ 34

Register 3—Receiver Clock Register ....................................... 35

Register 4—Demodulator Set-up Register.............................. 36

Register 5—Sync Byte Register................................................. 37

Register 6—Correlator/Demodulator Register ...................... 38

Register 7—Readback Set-up Register .................................... 39

Register 8—Power-Down Test Register .................................. 40

Register 9—AGC Register......................................................... 41

Register 10—AGC 2 Register.................................................... 42

Register 11—AFC Register ....................................................... 42

Register 12—Test Register......................................................... 43

Register 13—Offset Removal and Signal Gain Register ....... 44

Outline Dimensions ....................................................................... 45

Ordering Guide .......................................................................... 45

Rev. 0 | Page 2 of 48

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