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부품번호 AD7021 기능
기능 High Performance Narrowband ISM Transceiver IC
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AD7021 데이터시트, 핀배열, 회로
www.DataSheet4U.com
Preliminary Technical Data
High Performance Narrowband
ISM Transceiver IC
ADF7021
FEATURES
Low power, low IF transceiver
Frequency bands
80 MHz to 650 MHz
862 MHz to 940 MHz
Modulation schemes
2FSK, 3FSK, 4FSK
Spectral shaping
Gaussian and raised-cosine filtering
Data rates supported
0.05 kbps to 25 kbps
2.3 V to 3.6 V power supply
Programmable output power
−16 dBm to +13 dBm in 63 steps
Automatic PA ramp control
Receiver sensitivity
−125 dBm at 1 kbps, 2 FSK
On-chip VCO and fractional-N PLL
RSET
On-chip 7-bit ADC and temperature sensor
Fully automatic frequency control loop (AFC)
Digital RSSI
Integrated Tx/Rx switch
Leakage current <1 μA in power-down mode
APPLICATIONS
Narrow-band standards
ETSI EN 300-220, FCC Part 90, FCC Part 15, FCC Part 95,
ARIB STD-T67
Low cost, wireless data transfer
Remote control/security systems
Wireless metering
Private mobile radio
Wireless medical telemetry service (WMTS)
Keyless entry
Home automation
Process and building control
Pagers
FUNCTIONAL BLOCK DIAGRAM
CE CREG(1:4)
MUXOUT
RLNA
POLARIZATION
TEMP
SENSOR
MUX
7-BIT ADC
LDO(1:4)
TEST MUX
RFIN
RFINB
LNA
GAIN
IF FILTER
RSSI/
OFFSET
CORRECTION
2FSK
3FSK
4FSK
DEMODULATOR
CLOCK
AND DATA
RECOVERY
Tx/Rx
CONTROL
PA RAMP
RFOUT
DIVIDERS/
MUXING
MUX
VCO
AGC
CONTROL
AFC
CONTROL
SERIAL
PORT
DIV P
N/N + 1
Σ-Δ
MODULATOR
2FSK
3FSK
4FSK
MOD CONTROL
CP PFD
DIV R
RING OSC
CLK
DIV
GAUSSIAN/
RAISED COSINE
FILTER
3FSK
ENCODING
L1 L2 VCOIN CPOUT
OSC1 OSC2
Figure 1.
CLKOUT
DATA CLK | TxDATA
DATA I/O | RxDATA
SWD
SLE
SDATA
SREAD
SCLK
Rev. PrI
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
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.
DataSheet4 U .com
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2006 Analog Devices, Inc. All rights reserved.




AD7021 pdf, 반도체, 판매, 대치품
www.DataSheet4U.com
ADF7021
Preliminary Technical Data
SPECIFICATIONS
VDD = 2.3 V to 3.6 V, GND = 0 V, TA = TMIN to TMAX, unless otherwise noted. Typical specifications are at VDD = 3 V, TA = 25°C.
All measurements are performed with the EVAL-ADF7021DBx using PN9 data sequence, unless otherwise noted.
Table 1.
Parameter
RF CHARACTERISTICS
Frequency Ranges (Direct Output)
Frequency Ranges (Divide-by-2 Mode)
Frequency Ranges (Direct Output)
Frequency Ranges (Divide-by-2 Mode)
Phase Frequency Detector (PFD)
Frequency
TRANSMISSION PARAMETERS
Data Rate
Frequency Shift Keying
Frequency Deviation1
Deviation Frequency Resolution
Gaussian Filter BT
Raised Cosine Filter Alpha
Transmit Power 2
Transmit Power Variation vs. Temperature
Transmit Power Variation vs. VDD
Transmit Power Flatness
Programmable Step Size
−20 dBm to +13 dBm
Spurious Emissions
Integer Boundary
Reference
Harmonics
Second Harmonic
Third Harmonic
All Other Harmonics
Optimum PA Load Impedance3
Min
135
80
862
431
RF/256
0.05
56
306
56
−20
RECEIVER PARAMETERS
2FSK Input Sensitivity
Typ
0.5
0.5
±1
±1
±1
0.3125
−55
−65
−27
−21
−35
39 + j61
48 + j54
54 + j94
Sensitivity at 1 kbps
LNA and Mixer, Input IP3
Enhanced Linearity Mode
Low Current Mode
High Sensitivity Mode
Rx Spurious Emissions6
AFC
Maximum Pull-In Range
Response Time
Accuracy
−125
6.8
−3.2
−35
±127.5
48
1
Max Unit
650 MHz
325 MHz
940 MHz
470 MHz
TBD MHz
25 kbps
Hz
Hz
Hz
+13 dBm
dB
dB
dB
dB
dBc
dBc
dBc
dBc
dBc
Ω
Ω
Ω
dBm
dBm
dBm
dBm
−57 dBm
−47 dBm
kHz
Bits
kHz
Test Conditions
External VCO inductor
External VCO inductor, divide-by-2 enabled
Internal VCO inductor
Internal VCO inductor, divide-by-2 enabled
Phase frequency detector (PFD) = 3.625 MHz
PFD = 20 MHz
PFD = 3.625 MHz
VDD = 3.0 V, TA = 25°C
From −40°C to +85°C
From 2.3 V to 3.6 V at 915 MHz, TA = 25°C
From 902 MHz to 928 MHz, 3 V, TA = 25°C
50 kHz loop bandwidth (BW)
Unfiltered conductive
Unfiltered conductive
Unfiltered conductive
FRF = 915 MHz
FRF = 868 MHz
FRF = 433 MHz
Bit error rate (BER) = 10−3, FRF = 915 MHz, low
noise amplifier (LNA) and power amplifier
(PA) matched separately4
FDEV = 1 kHz, high sensitivity mode5
Pin = −20 dBm, 2 CW interferers
FRF = 915 MHz, F1 = FRF + 3 MHz
F2 = FRF + 6 MHz, maximum gain
<1 GHz at antenna input
>1 GHz at antenna input
Mod index = 0.875
DataSheet4 U .com
Rev. PrI | Page 4 of 44

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AD7021 전자부품, 판매, 대치품
www.DataSheet4U.com
Preliminary Technical Data
ADF7021
TIMING CHARACTERISTICS
VDD = 3 V ± 10%, VGND = 0 V, TA = 25°C, unless otherwise noted. Guaranteed by design, but not production tested.
Table 2.
Parameter
t1
t2
t3
t4
t5
t6
t8
t9
t10
Limit at TMIN to TMAX
<10
<10
<25
<25
<10
<20
<25
<25
<10
Unit Test Conditions/Comments
ns SDATA to SCLK setup time
ns SDATA to SCLK hold time
ns SCLK high duration
ns SCLK low duration
ns SCLK to SLE setup time
ns SLE pulse width
ns SCLK to SREAD data valid, readback
ns SREAD hold time after SCLK, readback
ns SCLK to SLE disable time, readback
SCLK
SDATA
DB31 (MSB)
t1 t2
DB30
t3 t4
DB2
DB1
(CONTROL BIT C2)
SLE
SCLK
t1
t2
Figure 2. Serial Interface Timing Diagram
DB0 (LSB)
(CONTROL BIT C1)
t6
t5
SDATA
SLE
REG7 DB0
(CONTROL BIT C1)
t3
SREAD
t8
X
RV16
RV15
t9
Figure 3. Readback Timing Diagram
t10
RV2 RV1
DataSheet4 U .com
Rev. PrI | Page 7 of 44

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AD7021

High Performance Narrowband ISM Transceiver IC

Analog Devices
Analog Devices

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