ADF7021_06 View Datasheet(PDF) - Analog Devices
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Description
Manufacturer
ADF7021_06 Datasheet PDF : 44 Pages
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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
Rev. PrI | Page 4 of 44
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