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ADF7020 반도체 회로 부품 판매점

High Performance ISM Band FSK/ASK Transceiver IC



Analog Devices 로고
Analog Devices
ADF7020 데이터시트, 핀배열, 회로
Data Sheet
High Performance, ISM Band,
FSK/ASK Transceiver IC
ADF7020
FEATURES
Low power, low IF transceiver
Frequency bands
431 MHz to 478 MHz
862 MHz to 956 MHz
Data rates supported
0.15 kbps to 200 kbps, FSK
0.15 kbps to 64 kbps, ASK
2.3 V to 3.6 V power supply
Programmable output power
−16 dBm to +13 dBm in 0.3 dBm steps
Receiver sensitivity
−119 dBm at 1 kbps, FSK
−112 dBm at 9.6 kbps, FSK
−106.5 dBm at 9.6 kbps, ASK
Low power consumption
19 mA in receive mode
26.8 mA in transmit mode (10 dBm output)
−3 dBm IIP3 in high linearity mode
On-chip VCO and fractional-N PLL
On-chip 7-bit ADC and temperature sensor
Fully automatic frequency control loop (AFC) compensates
for ±25 ppm crystal at 862 MHz to 956 MHz or±50 ppm at
431 MHz to 478 MHz
Digital RSSI
Integrated Tx/Rx switch
Leakage current of <1 μA in power-down mode
APPLICATIONS
Low cost wireless data transfer
Remote control/security systems
Wireless metering
Keyless entry
Home automation
Process and building control
Wireless voice
RSET
CREG[1:4]
FUNCTIONAL BLOCK DIAGRAM
ADCIN
MUXOUT
RLNA
LDO(1:4)
OFFSET
CORRECTION
TEMP
SENSOR
TEST MUX
ADF7020
RFIN
RFINB
RFOUT
LNA
GAIN
IF FILTER
RSSI
MUX 7-BIT ADC
FSK/ASK
DEMODULATOR
OFFSET
CORRECTION
AGC
CONTROL
FSK MOD
CONTROL
GAUSSIAN
FILTER
Σ-
MODULATOR
AFC
CONTROL
DIVIDERS/
MUXING
DIV P
N/N + 1
VCO
CP PFD
DIV R
OSC
CLK
DIV
DATA
SYNCHRONIZER
Tx/Rx
CONTROL
SERIAL
PORT
VCOIN CPOUT
OSC1 OSC2
Figure 1.
CLKOUT
CE
DATA CLK
DATA I/O
INT/LOCK
SLE
SDATA
SREAD
SCLK
Rev. E
Document Feedback
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2005–2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com


ADF7020 데이터시트, 핀배열, 회로
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
Image Rejection Calibration ..................................................... 26
Data Sheet
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. E | Page 2 of 47




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