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EVAL-ADF7021DBZ5 Datasheet, PDF (2/64 Pages) Analog Devices – High Performance Narrow-Band Transceiver IC | |||
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ADF7021
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
Data Sheet
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
Register 0âN Register............................................................... 47
Register 1âVCO/Oscillator Register ...................................... 48
Register 2âTransmit Modulation Register ............................ 49
Register 3âTransmit/Receive Clock Register........................ 50
Register 4âDemodulator Setup Register ............................... 51
Register 5âIF Filter Setup Register......................................... 52
Register 6âIF Fine Cal Setup Register ................................... 53
Register 7âReadback Setup Register...................................... 54
Register 8âPower-Down Test Register .................................. 55
Register 9âAGC Register ......................................................... 56
Register 10âAFC Register ....................................................... 57
Register 11âSync Word Detect Register ................................ 58
Register 12âSWD/Threshold Setup Register........................ 58
Register 13â3FSK/4FSK Demod Register ............................. 59
Register 14âTest DAC Register............................................... 60
Register 15âTest Mode Register ............................................. 61
Outline Dimensions ....................................................................... 62
Ordering Guide .......................................................................... 62
Rev. B | Page 2 of 64
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