ADF7021 datasheet(2/64 Pages) AD

2 / 64 page

ADF7021

Data Sheet

Rev. B | Page 2 of 64

TABLE OF CONTENTS

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

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

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

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

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

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

RF and PLL Specifications........................................................... 5

Transmission Specifications........................................................ 6

Receiver Specifications ................................................................ 8

Digital Specifications ................................................................. 10

General Specifications ............................................................... 11

Timing Characteristics .............................................................. 11

Absolute Maximum Ratings.......................................................... 15

ESD Caution................................................................................ 15

Pin Configuration and Function Descriptions........................... 16

Typical Performance Characteristics ........................................... 18

Frequency Synthesizer ................................................................... 22

Reference Input........................................................................... 22

MUXOUT.................................................................................... 23

Voltage Controlled Oscillator (VCO) ...................................... 24

Choosing Channels for Best System Performance................. 25

Transmitter ...................................................................................... 26

RF Output Stage.......................................................................... 26

Modulation Schemes.................................................................. 26

Spectral Shaping ......................................................................... 28

Modulation and Filtering Options ........................................... 29

Transmit Latency ........................................................................ 29

Test Pattern Generator............................................................... 29

Receiver Section.............................................................................. 30

RF Front End............................................................................... 30

IF Filter......................................................................................... 30

RSSI/AGC.................................................................................... 31

Demodulation, Detection, and CDR ....................................... 32

Receiver Setup............................................................................. 34

Demodulator Considerations ................................................... 36

AFC Operation ........................................................................... 36

Automatic Sync Word Detection (SWD)................................ 37

Applications Information .............................................................. 38

IF Filter Bandwidth Calibration ............................................... 38

LNA/PA Matching...................................................................... 38

Image Rejection Calibration ..................................................... 39

Packet Structure and Coding.................................................... 41

Programming After Initial Power-Up ..................................... 41

Applications Circuit ................................................................... 44

Serial Interface ................................................................................ 45

Readback Format........................................................................ 45

Interfacing to Microcontroller/DSP ........................................ 46

Outline Dimensions ....................................................................... 62

Ordering Guide .......................................................................... 62

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